diff --git a/ChangeLog b/ChangeLog
index d87424b..176a100 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+2023-03-26 Andreas Kessel  <typo3-dev@formatsoft.de>
+	* 3.0.0 upgrade to TYPO3 12.2
+
 2021-10-01 Andreas Kessel  <typo3-dev@formatsoft.de>
 	* 2.2.5 bug fix release: undefined array key
 
diff --git a/Classes/Task/DbcheckTaskAdditionalFieldProvider.php b/Classes/Task/DbcheckTaskAdditionalFieldProvider.php
index 38263ea..6f06dcc 100644
--- a/Classes/Task/DbcheckTaskAdditionalFieldProvider.php
+++ b/Classes/Task/DbcheckTaskAdditionalFieldProvider.php
@@ -15,7 +15,7 @@
 
 use TYPO3\CMS\Backend\Utility\BackendUtility;
 use TYPO3\CMS\Core\Localization\LanguageService;
-use TYPO3\CMS\Core\Messaging\FlashMessage;
+use TYPO3\CMS\Core\Type\ContextualFeedbackSeverity;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Scheduler\AbstractAdditionalFieldProvider;
 use TYPO3\CMS\Scheduler\Controller\SchedulerModuleController;
@@ -91,10 +91,11 @@ public function getAdditionalFields(array &$taskInfo, $task, SchedulerModuleCont
             . htmlspecialchars($fieldValue)
             . '">';
             $label = $lang->sL($this->languageFile . ':tasks.validate.'.$field);
-            $label = BackendUtility::wrapInHelp('dbcheck', $fieldId, $label);
             $additionalFields[$fieldId] = [
                 'code' => $fieldCode,
-                'label' => $label
+                'label' => $label,
+                'cshKey' => '',
+                'cshLabel' => $fieldId,
             ];
         }
 
@@ -125,7 +126,7 @@ public function validateAdditionalFields(array &$submittedData, SchedulerModuleC
                     $isValid = false;
                     $this->addMessage(
                         $lang->sL($this->languageFile . ':tasks.validate.notificationEmail.invalid'),
-                        FlashMessage::ERROR
+                        ContextualFeedbackSeverity::ERROR
                     );
                 }
             }
@@ -135,7 +136,7 @@ public function validateAdditionalFields(array &$submittedData, SchedulerModuleC
             $isValid = false;
             $this->addMessage(
                 $lang->sL($this->languageFile . ':tasks.validate.maxDbSize.invalid'),
-                FlashMessage::ERROR
+                ContextualFeedbackSeverity::ERROR
             );
         }
         return $isValid;
diff --git a/Classes/Task/LogsizecheckTaskAdditionalFieldProvider.php b/Classes/Task/LogsizecheckTaskAdditionalFieldProvider.php
index a4561f3..3707783 100644
--- a/Classes/Task/LogsizecheckTaskAdditionalFieldProvider.php
+++ b/Classes/Task/LogsizecheckTaskAdditionalFieldProvider.php
@@ -15,7 +15,7 @@
 
 use TYPO3\CMS\Backend\Utility\BackendUtility;
 use TYPO3\CMS\Core\Localization\LanguageService;
-use TYPO3\CMS\Core\Messaging\FlashMessage;
+use TYPO3\CMS\Core\Type\ContextualFeedbackSeverity;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Scheduler\AbstractAdditionalFieldProvider;
 use TYPO3\CMS\Scheduler\Controller\SchedulerModuleController;
@@ -91,10 +91,11 @@ public function getAdditionalFields(array &$taskInfo, $task, SchedulerModuleCont
             . htmlspecialchars($fieldValue)
             . '">';
             $label = $lang->sL($this->languageFile . ':tasks.validate.'.$field);
-            $label = BackendUtility::wrapInHelp('logsizecheck', $fieldId, $label);
             $additionalFields[$fieldId] = [
                 'code' => $fieldCode,
-                'label' => $label
+                'label' => $label,
+                'cshKey' => '',
+                'cshLabel' => $fieldId,
             ];
         }
 
@@ -125,7 +126,7 @@ public function validateAdditionalFields(array &$submittedData, SchedulerModuleC
                     $isValid = false;
                     $this->addMessage(
                         $lang->sL($this->languageFile . ':tasks.validate.notificationEmail.invalid'),
-                        FlashMessage::ERROR
+                        ContextualFeedbackSeverity::ERROR
                     );
                 }
             }
@@ -135,7 +136,7 @@ public function validateAdditionalFields(array &$submittedData, SchedulerModuleC
             $isValid = false;
             $this->addMessage(
                 $lang->sL($this->languageFile . ':tasks.validate.maxLogSize.invalid'),
-                FlashMessage::ERROR
+                ContextualFeedbackSeverity::ERROR
             );
         }
         return $isValid;
diff --git a/composer.json b/composer.json
index c77397e..dfe91c2 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,8 @@
 		"source": "https://github.com/format-gmbh/format_t3tools"
 	},
 	"require": {
-		"typo3/cms-core": "^9.5 || ^10.4 || ^11.5"
+		"typo3/cms-core": "^12.2",
+		"typo3/cms-scheduler": "^12.2"
 	},
 	"autoload": {
 		"psr-4": {
diff --git a/ext_emconf.php b/ext_emconf.php
index 7f61925..7b86543 100644
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -3,7 +3,7 @@
 	'title' => 'Tools for your TYPO3 installation',
 	'description' => 'This TYPO3 extension checks the size of all database tables and/or the size of all log files at regular intervals. If a certain size is exceeded, a mail can be sent. There is a separate scheduler task for each check.',
 	'category' => 'be',
-	'version' => '2.2.5',
+	'version' => '3.0.0',
 	'author' => 'Andreas Kessel',
 	'author_email' => 'typo3-dev@formatsoft.de',
 	'author_company' => 'format Software Gmbh (www.formatsoft.de)',
@@ -13,7 +13,7 @@
 	'clearCacheOnLoad' => 0,
 	'constraints' => [
 		'depends' => [
-			'typo3' => '9.5.17-11.5.99',
+			'typo3' => '12.2.0-12.2.99',
             'scheduler' => ''
 		],
         'conflicts' => [],
diff --git a/ext_tables.php b/ext_tables.php
deleted file mode 100644
index 1d514a6..0000000
--- a/ext_tables.php
+++ /dev/null
@@ -1,2 +0,0 @@
-<?php
-defined('TYPO3_MODE') or die();