diff --git a/src/analysis/processing/qgsalgorithmwritevectortiles.cpp b/src/analysis/processing/qgsalgorithmwritevectortiles.cpp
index 71b3c8cb20eb..219e92a8be0c 100644
--- a/src/analysis/processing/qgsalgorithmwritevectortiles.cpp
+++ b/src/analysis/processing/qgsalgorithmwritevectortiles.cpp
@@ -106,7 +106,7 @@ QgsProcessingAlgorithm *QgsWriteVectorTilesXyzAlgorithm::createInstance() const
 
 void QgsWriteVectorTilesXyzAlgorithm::initAlgorithm( const QVariantMap & )
 {
-  addParameter( new QgsProcessingParameterFolderDestination( QStringLiteral( "OUTPUT_DIR" ), QObject::tr( "Output directry" ) ) );
+  addParameter( new QgsProcessingParameterFolderDestination( QStringLiteral( "OUTPUT_DIR" ), QObject::tr( "Output directory" ) ) );
   addParameter( new QgsProcessingParameterString( QStringLiteral( "XYZ_TEMPLATE" ), QObject::tr( "File template" ), QStringLiteral( "{z}/{x}/{y}.pbf" ) ) );
 
   addBaseParameters();
diff --git a/src/core/processing/qgsprocessingparametervectortilewriterlayers.cpp b/src/core/processing/qgsprocessingparametervectortilewriterlayers.cpp
index 49c85269fdf0..84004477a7c0 100644
--- a/src/core/processing/qgsprocessingparametervectortilewriterlayers.cpp
+++ b/src/core/processing/qgsprocessingparametervectortilewriterlayers.cpp
@@ -97,8 +97,6 @@ QString QgsProcessingParameterVectorTileWriterLayers::asPythonString( QgsProcess
     case QgsProcessing::PythonQgsProcessingAlgorithmSubclass:
     {
       QString code = QStringLiteral( "QgsProcessingParameterVectorTileWriterLayers('%1', '%2'" ).arg( name(), description() );
-      //if ( mFlags & FlagOptional )
-      //  code += QStringLiteral( ", optional=True" );
       code += QStringLiteral( ")" );
       return code;
     }
diff --git a/src/core/processing/qgsprocessingparametervectortilewriterlayers.h b/src/core/processing/qgsprocessingparametervectortilewriterlayers.h
index 8043eb115d4a..5535724a9a98 100644
--- a/src/core/processing/qgsprocessingparametervectortilewriterlayers.h
+++ b/src/core/processing/qgsprocessingparametervectortilewriterlayers.h
@@ -16,13 +16,38 @@
 #ifndef QGSPROCESSINGPARAMETERVECTORTILEWRITERLAYERS_H
 #define QGSPROCESSINGPARAMETERVECTORTILEWRITERLAYERS_H
 
-#include "qgsprocessingparameters.h"
+#define SIP_NO_FILE
 
+#include "qgsprocessingparameters.h"
+#include "qgsprocessingparametertype.h"
 #include "qgsvectortilewriter.h"
 
+
+/**
+ * A parameter for processing algorithms that need a list of input vector layers for writing
+ * of vector tiles - this parameter provides processing framework's adapter for QList<QgsVectorTileWriter::Layer>.
+ *
+ * A valid value for this parameter is a list (QVariantList), where each item is a map (QVariantMap) in this form:
+ * {
+ *   'layer':  <string> or <QgsMapLayer>,
+ *   // key-value pairs below are optional
+ *   'layerName': <string>,
+ *   'filterExpression': <string>,
+ *   'minZoom': <int>,
+ *   'maxZoom': <int>
+ * }
+ *
+ * Static functions parametersAsLayers(), variantMapAsLayer(), layerAsVariantMap() provide conversion between
+ * QgsVectorTileWriter::Layer representation and QVariant representation.
+ *
+ * \ingroup core
+ * \note This class is not a part of public API.
+ * \since QGIS 3.14
+ */
 class CORE_EXPORT QgsProcessingParameterVectorTileWriterLayers : public QgsProcessingParameterDefinition
 {
   public:
+    //! Constructor for QgsProcessingParameterVectorTileWriterLayers.
     QgsProcessingParameterVectorTileWriterLayers( const QString &name, const QString &description = QString() );
 
     QgsProcessingParameterDefinition *clone() const override;
@@ -31,26 +56,29 @@ class CORE_EXPORT QgsProcessingParameterVectorTileWriterLayers : public QgsProce
     QString valueAsPythonString( const QVariant &value, QgsProcessingContext &context ) const override;
     QString asPythonString( QgsProcessing::PythonOutputType outputType = QgsProcessing::PythonQgsProcessingAlgorithmSubclass ) const override;
 
+    //! Returns the type name for the parameter class.
     static QString typeName() { return QStringLiteral( "vectortilewriterlayers" ); }
 
+    //! Converts a QVariant value (a QVariantList) to a list of input layers
     static QList<QgsVectorTileWriter::Layer> parameterAsLayers( const QVariant &layersVariant, QgsProcessingContext &context );
-
+    //! Converts a QVariant value (a QVariantMap) to a single input layer
     static QgsVectorTileWriter::Layer variantMapAsLayer( const QVariantMap &layerVariantMap, QgsProcessingContext &context );
+    //! Converts a single input layer to QVariant representation (a QVariantMap)
     static QVariantMap layerAsVariantMap( const QgsVectorTileWriter::Layer &layer );
 
 };
 
-#include "qgsprocessingparametertype.h"
 
 /**
- * A parameter for processing algorithms which accepts multiple map layers.
+ * Parameter type definition for QgsProcessingParameterVectorTileWriterLayers.
  *
  * \ingroup core
- * \note No Python bindings available. Get your copy from QgsApplication.processingRegistry().parameterType('vectortilewriterlayers')
- * \since QGIS 3.2
+ * \note This class is not a part of public API.
+ * \since QGIS 3.14
  */
-class CORE_EXPORT QgsProcessingParameterTypeVectorTileWriterLayers : public QgsProcessingParameterType
+class QgsProcessingParameterTypeVectorTileWriterLayers : public QgsProcessingParameterType
 {
+  public:
     QgsProcessingParameterDefinition *create( const QString &name ) const override SIP_FACTORY
     {
       return new QgsProcessingParameterVectorTileWriterLayers( name );
@@ -70,25 +98,6 @@ class CORE_EXPORT QgsProcessingParameterTypeVectorTileWriterLayers : public QgsP
     {
       return QgsProcessingParameterVectorTileWriterLayers::typeName();
     }
-    /*
-        QString pythonImportString() const override
-        {
-          return QStringLiteral( "from qgis.core import QgsProcessingParameterMultipleLayers" );
-        }
-
-        QString className() const override
-        {
-          return QStringLiteral( "QgsProcessingParameterMultipleLayers" );
-        }
-
-        QStringList acceptedPythonTypes() const override
-        {
-          return QStringList() << QObject::tr( "list[str]: list of layer IDs" )
-                 << QObject::tr( "list[str]: list of layer names" )
-                 << QObject::tr( "list[str]: list of layer sources" )
-                 << QStringLiteral( "list[QgsMapLayer]" )
-                 << QStringLiteral( "QgsProperty" );
-        }*/
 };
 
 
diff --git a/src/gui/processing/qgsprocessingvectortilewriterlayerswidgetwrapper.cpp b/src/gui/processing/qgsprocessingvectortilewriterlayerswidgetwrapper.cpp
index 5ad9e9b511f9..8876ba376875 100644
--- a/src/gui/processing/qgsprocessingvectortilewriterlayerswidgetwrapper.cpp
+++ b/src/gui/processing/qgsprocessingvectortilewriterlayerswidgetwrapper.cpp
@@ -47,16 +47,21 @@ QgsProcessingVectorTileWriteLayerDetailsWidget::QgsProcessingVectorTileWriteLaye
   if ( !mLayer )
     return;
 
+  mSpinMinZoom->setClearValue( -1, tr( "Not set" ) );
+  mSpinMaxZoom->setClearValue( -1, tr( "Not set" ) );
+  mEditFilterExpression->setMultiLine( true );
+  mEditFilterExpression->setLayer( mLayer );
+
   mSpinMinZoom->setValue( layer.minZoom() );
   mSpinMaxZoom->setValue( layer.maxZoom() );
   mEditLayerName->setText( layer.layerName() );
   mEditLayerName->setPlaceholderText( mLayer->name() );
-  mEditFilterExpression->setPlainText( layer.filterExpression() );
+  mEditFilterExpression->setExpression( layer.filterExpression() );
 
   connect( mSpinMinZoom, qgis::overload<int>::of( &QSpinBox::valueChanged ), this, &QgsPanelWidget::widgetChanged );
   connect( mSpinMaxZoom, qgis::overload<int>::of( &QSpinBox::valueChanged ), this, &QgsPanelWidget::widgetChanged );
   connect( mEditLayerName, &QLineEdit::textChanged, this, &QgsPanelWidget::widgetChanged );
-  // TODO?? connect( mEditFilterExpression, &QTextEdit::textChanged, this, &QgsPanelWidget::widgetChanged );
+  connect( mEditFilterExpression, &QgsExpressionLineEdit::expressionChanged, this, &QgsPanelWidget::widgetChanged );
 }
 
 QVariant QgsProcessingVectorTileWriteLayerDetailsWidget::value() const
@@ -65,7 +70,7 @@ QVariant QgsProcessingVectorTileWriteLayerDetailsWidget::value() const
   layer.setMinZoom( mSpinMinZoom->value() );
   layer.setMaxZoom( mSpinMaxZoom->value() );
   layer.setLayerName( mEditLayerName->text() );
-  layer.setFilterExpression( mEditFilterExpression->toPlainText() );
+  layer.setFilterExpression( mEditFilterExpression->expression() );
   return QgsProcessingParameterVectorTileWriterLayers::layerAsVariantMap( layer );
 }
 
@@ -121,9 +126,8 @@ QgsProcessingVectorTileWriterLayersPanelWidget::QgsProcessingVectorTileWriterLay
 
     QString title = layer->name();
 
-    addOption( vm, title, false ); //, true );
+    addOption( vm, title, false );
   }
-
 }
 
 
@@ -144,25 +148,28 @@ void QgsProcessingVectorTileWriterLayersPanelWidget::configureLayer()
   {
     QgsProcessingVectorTileWriteLayerDetailsWidget *widget = new QgsProcessingVectorTileWriteLayerDetailsWidget( value, mProject );
     widget->setPanelTitle( tr( "Configure Layer" ) );
+    widget->buttonBox()->hide();
 
     connect( widget, &QgsProcessingVectorTileWriteLayerDetailsWidget::widgetChanged, this, [ = ]()
     {
       setItemValue( item, widget->value() );
     } );
-//    connect( widget, &QgsProcessingVectorTileWriteLayerDetailsWidget::acceptClicked, widget, &QgsPanelWidget::acceptPanel );
     panel->openPanel( widget );
   }
   else
   {
-    // TODO
-#if 0
-    QgsProcessingMultipleInputDialog dlg( mParam, mValue, mModelSources, mModel, this, nullptr );
-    dlg.setProject( mProject );
+    QDialog dlg;
+    dlg.setWindowTitle( tr( "Configure Layer" ) );
+    QVBoxLayout *vLayout = new QVBoxLayout();
+    QgsProcessingVectorTileWriteLayerDetailsWidget *widget = new QgsProcessingVectorTileWriteLayerDetailsWidget( value, mProject );
+    vLayout->addWidget( widget );
+    connect( widget->buttonBox(), &QDialogButtonBox::accepted, &dlg, &QDialog::accept );
+    connect( widget->buttonBox(), &QDialogButtonBox::rejected, &dlg, &QDialog::reject );
+    dlg.setLayout( vLayout );
     if ( dlg.exec() )
     {
-      setValue( dlg.selectedOptions() );
+      setItemValue( item, widget->value() );
     }
-#endif
   }
 
 }
@@ -197,12 +204,17 @@ QString QgsProcessingVectorTileWriterLayersPanelWidget::titleForLayer( const Qgs
   QString title = layer.layer()->name();
 
   // add more details
-  if ( layer.minZoom() >= 0 || layer.maxZoom() >= 0 )
-    title += QString( " [zoom: %1 - %2]" ).arg( layer.minZoom() ).arg( layer.maxZoom() );
+  if ( layer.minZoom() >= 0 && layer.maxZoom() >= 0 )
+    title += tr( " [zoom %1...%2]" ).arg( layer.minZoom() ).arg( layer.maxZoom() );
+  else if ( layer.minZoom() >= 0 )
+    title += tr( " [zoom >= %1]" ).arg( layer.minZoom() );
+  else if ( layer.maxZoom() >= 0 )
+    title += tr( " [zoom <= %1]" ).arg( layer.maxZoom() );
+
   if ( !layer.layerName().isEmpty() )
-    title += QString( " [name: %1]" ).arg( layer.layerName() );
+    title += tr( " [name: %1]" ).arg( layer.layerName() );
   if ( !layer.filterExpression().isEmpty() )
-    title += QString( " [with filter]" );
+    title += tr( " [with filter]" );
 
   return title;
 }
@@ -267,15 +279,19 @@ void QgsProcessingVectorTileWriterLayersWidget::showDialog()
   }
   else
   {
-    // TODO
-#if 0
-    QgsProcessingMultipleInputDialog dlg( mParam, mValue, mModelSources, mModel, this, nullptr );
-    dlg.setProject( mProject );
+    QDialog dlg;
+    dlg.setWindowTitle( tr( "Input layers" ) );
+    QVBoxLayout *vLayout = new QVBoxLayout();
+    QgsProcessingVectorTileWriterLayersPanelWidget *widget = new QgsProcessingVectorTileWriterLayersPanelWidget( mValue, mProject );
+    vLayout->addWidget( widget );
+    widget->buttonBox()->addButton( QDialogButtonBox::Cancel );
+    connect( widget->buttonBox(), &QDialogButtonBox::accepted, &dlg, &QDialog::accept );
+    connect( widget->buttonBox(), &QDialogButtonBox::rejected, &dlg, &QDialog::reject );
+    dlg.setLayout( vLayout );
     if ( dlg.exec() )
     {
-      setValue( dlg.selectedOptions() );
+      setValue( widget->selectedOptions() );
     }
-#endif
   }
 }
 
@@ -306,7 +322,6 @@ QgsAbstractProcessingParameterWidgetWrapper *QgsProcessingVectorTileWriterLayers
 QWidget *QgsProcessingVectorTileWriterLayersWidgetWrapper::createWidget()
 {
   mPanel = new QgsProcessingVectorTileWriterLayersWidget( nullptr );
-  //mPanel->setToolTip( parameterDefinition()->toolTip() );
   mPanel->setProject( widgetContext().project() );
   connect( mPanel, &QgsProcessingVectorTileWriterLayersWidget::changed, this, [ = ]
   {
@@ -326,6 +341,7 @@ void QgsProcessingVectorTileWriterLayersWidgetWrapper::setWidgetContext( const Q
 
 void QgsProcessingVectorTileWriterLayersWidgetWrapper::setWidgetValue( const QVariant &value, QgsProcessingContext &context )
 {
+  Q_UNUSED( context )
   if ( mPanel )
   {
     mPanel->setValue( value );
@@ -335,22 +351,14 @@ void QgsProcessingVectorTileWriterLayersWidgetWrapper::setWidgetValue( const QVa
 QVariant QgsProcessingVectorTileWriterLayersWidgetWrapper::widgetValue() const
 {
   return mPanel ? mPanel->value() : QVariant();
-//  if ( mPanel )
-//    return !mPanel->value().toList().isEmpty() ? mPanel->value() : QVariant();
-//  else
-//    return QVariant();
 }
 
 QStringList QgsProcessingVectorTileWriterLayersWidgetWrapper::compatibleParameterTypes() const
 {
   return QStringList();
-//         << QgsProcessingParameterBand::typeName()
-//         << QgsProcessingParameterNumber::typeName()
-//         << QgsProcessingOutputFolder::typeName();
 }
 
 QStringList QgsProcessingVectorTileWriterLayersWidgetWrapper::compatibleOutputTypes() const
 {
   return QStringList();
-  //       << QgsProcessingOutputNumber::typeName();
 }
diff --git a/src/gui/processing/qgsprocessingvectortilewriterlayerswidgetwrapper.h b/src/gui/processing/qgsprocessingvectortilewriterlayerswidgetwrapper.h
index 204714c4b4a5..6b8fe687b5f5 100644
--- a/src/gui/processing/qgsprocessingvectortilewriterlayerswidgetwrapper.h
+++ b/src/gui/processing/qgsprocessingvectortilewriterlayerswidgetwrapper.h
@@ -16,6 +16,8 @@
 #ifndef QGSPROCESSINGVECTORTILEWRITERLAYERSWIDGETWRAPPER_H
 #define QGSPROCESSINGVECTORTILEWRITERLAYERSWIDGETWRAPPER_H
 
+#define SIP_NO_FILE
+
 #include "qgsprocessingwidgetwrapper.h"
 #include "qgsprocessingmultipleselectiondialog.h"
 #include "qgsvectortilewriter.h"
@@ -35,6 +37,8 @@ class QgsProcessingVectorTileWriteLayerDetailsWidget : public QgsPanelWidget, pr
 
     QVariant value() const;
 
+    QDialogButtonBox *buttonBox() { return mButtonBox; }
+
   private:
     QgsVectorLayer *mLayer = nullptr;
 };
diff --git a/src/ui/processing/qgsprocessingvectortilewriterlayerdetailswidgetbase.ui b/src/ui/processing/qgsprocessingvectortilewriterlayerdetailswidgetbase.ui
index fcd5f9386fb7..8551a19d30e4 100644
--- a/src/ui/processing/qgsprocessingvectortilewriterlayerdetailswidgetbase.ui
+++ b/src/ui/processing/qgsprocessingvectortilewriterlayerdetailswidgetbase.ui
@@ -11,15 +11,8 @@
    </rect>
   </property>
   <layout class="QGridLayout" name="gridLayout">
-   <item row="0" column="0">
-    <widget class="QLabel" name="label">
-     <property name="text">
-      <string>Min. zoom level</string>
-     </property>
-    </widget>
-   </item>
    <item row="0" column="1">
-    <widget class="QSpinBox" name="mSpinMinZoom">
+    <widget class="QgsSpinBox" name="mSpinMinZoom">
      <property name="minimum">
       <number>-1</number>
      </property>
@@ -31,6 +24,13 @@
      </property>
     </widget>
    </item>
+   <item row="0" column="0">
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>Min. zoom level</string>
+     </property>
+    </widget>
+   </item>
    <item row="1" column="0">
     <widget class="QLabel" name="label_2">
      <property name="text">
@@ -39,7 +39,7 @@
     </widget>
    </item>
    <item row="1" column="1">
-    <widget class="QSpinBox" name="mSpinMaxZoom">
+    <widget class="QgsSpinBox" name="mSpinMaxZoom">
      <property name="minimum">
       <number>-1</number>
      </property>
@@ -69,10 +69,30 @@
     </widget>
    </item>
    <item row="4" column="0" colspan="2">
-    <widget class="QPlainTextEdit" name="mEditFilterExpression"/>
+    <widget class="QgsExpressionLineEdit" name="mEditFilterExpression" native="true"/>
+   </item>
+   <item row="5" column="0" colspan="2">
+    <widget class="QDialogButtonBox" name="mButtonBox">
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
    </item>
   </layout>
  </widget>
+ <customwidgets>
+  <customwidget>
+   <class>QgsSpinBox</class>
+   <extends>QSpinBox</extends>
+   <header>qgsspinbox.h</header>
+  </customwidget>
+  <customwidget>
+   <class>QgsExpressionLineEdit</class>
+   <extends>QWidget</extends>
+   <header>qgsexpressionlineedit.h</header>
+   <container>1</container>
+  </customwidget>
+ </customwidgets>
  <resources/>
  <connections/>
 </ui>