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I have a problem with changing a property parameter that is of string type ____________________________________________________________________________________ #include <UnigineGame.h> #include "UnigineComponentSystem.h" class MaterialPaintingController final : public Unigine::ComponentBase { public: COMPONENT(MaterialPaintingController, Unigine::ComponentBase); COMPONENT_INIT(init); PROP_NAME("MaterialPaintingController"); PROP_PARAM(String, painting_variant, "DEF"); PROP_ARRAY(Node, surfaces); private: void init(); void parameterChanged(Unigine::PropertyPtr property, int propID); ____________________________________________________________________________________ then I use setParameterData in the call Unigine::String str("NewMat"); componentPtr->setParameterData("painting_variant", &str); I did not get a callback for a change and I can't find out what's going on. Is the use of setParameterData correct ? thanks for any help. Michal