VTKPythonAlgorithmBase smproperty.stringvector callback modification action

for a VTKPythonAlgorithmBase panel, is there a way to declare a callback function for an smproperty.stringvector upon a modification action ?
thanks for help

Is that much different than what these examples do for things like FileName. It’s not a callback in the conventional sense, but that’s the function that will get called when the user hits Apply button.

Thanks for the reply,
no unfortunately, I need the value befor the user hits the apply button

That’s not supported for a VTKPythonAlgorithm.