Thought this may help, take a look, in this picture, first I remove the default Tweak scale module, that part works ok, then I add my own tweak scale with the type defined and on the left side, that is what i see, first of all, it's on default type without ability to change it in GUI, second, using the right button i set it to 2, not only the slider won't update, also the part is not changing it's scale, also, even if I use the slider in the GUI, still the part is not respecting the value at all