diff --git a/install/scripts/materialtest.py b/install/scripts/materialtest.py
index 075ad87c4d..0e6b889f0a 100644
--- a/install/scripts/materialtest.py
+++ b/install/scripts/materialtest.py
@@ -93,6 +93,13 @@
 rotateIndex = editableDiffuseStage.addTransformation(dr.MaterialStage.TransformType.ROTATE, "time*0.5", "")
 editableDiffuseStage.updateTransformation(rotateIndex, dr.MaterialStage.TransformType.SCALE, "time*0.5", "0.5")
 editableDiffuseStage.removeTransformation(rotateIndex)
+editableDiffuseStage.setColourExpressionFromString(dr.MaterialStage.ColourComponent.RGB, "0.4*time")
+editableDiffuseStage.setConditionExpressionFromString("parm4 > 7")
+editableDiffuseStage.setTexGenType(dr.MaterialStage.TexGenType.REFLECT)
+editableDiffuseStage.setTexGenType(dr.MaterialStage.TexGenType.WOBBLESKY)
+editableDiffuseStage.setTexGenExpressionFromString(0, "0.1")
+editableDiffuseStage.setTexGenExpressionFromString(1, "0.2")
+editableDiffuseStage.setTexGenExpressionFromString(2, "0.3")
 
 for stage in newMaterial.getAllStages():
     print('Stage type: {0}'.format(stage.getType()))
diff --git a/plugins/script/interfaces/ShaderSystemInterface.cpp b/plugins/script/interfaces/ShaderSystemInterface.cpp
index 20a453b464..b73f546144 100644
--- a/plugins/script/interfaces/ShaderSystemInterface.cpp
+++ b/plugins/script/interfaces/ShaderSystemInterface.cpp
@@ -388,6 +388,10 @@ void ShaderSystemInterface::registerInterface(py::module& scope, py::dict& globa
     editableStage.def("addTransformation", &ScriptEditableMaterialStage::addTransformation);
     editableStage.def("removeTransformation", &ScriptEditableMaterialStage::removeTransformation);
     editableStage.def("updateTransformation", &ScriptEditableMaterialStage::updateTransformation);
+    editableStage.def("setColourExpressionFromString", &ScriptEditableMaterialStage::setColourExpressionFromString);
+    editableStage.def("setConditionExpressionFromString", &ScriptEditableMaterialStage::setConditionExpressionFromString);
+    editableStage.def("setTexGenType", &ScriptEditableMaterialStage::setTexGenType);
+    editableStage.def("setTexGenExpressionFromString", &ScriptEditableMaterialStage::setTexGenExpressionFromString);
 
 	// Expose the MaterialVisitor interface
 
diff --git a/plugins/script/interfaces/ShaderSystemInterface.h b/plugins/script/interfaces/ShaderSystemInterface.h
index eea2e6144f..53e5d133b6 100644
--- a/plugins/script/interfaces/ShaderSystemInterface.h
+++ b/plugins/script/interfaces/ShaderSystemInterface.h
@@ -249,6 +249,26 @@ class ScriptEditableMaterialStage :
     {
         if (_layer) _layer->updateTransformation(index, type, expression1, expression2);
     }
+    
+    void setColourExpressionFromString(IShaderLayer::ColourComponentSelector component, const std::string& expression)
+    {
+        if (_layer) _layer->setColourExpressionFromString(component, expression);
+    }
+
+    void setConditionExpressionFromString(const std::string& expression)
+    {
+        if (_layer) _layer->setConditionExpressionFromString(expression);
+    }
+
+    void setTexGenType(IShaderLayer::TexGenType type)
+    {
+        if (_layer) _layer->setTexGenType(type);
+    }
+
+    void setTexGenExpressionFromString(std::size_t index, const std::string& expression)
+    {
+        if (_layer) _layer->setTexGenExpressionFromString(index, expression);
+    }
 };
 
 /**