Ow, I didn’t understand what your problem was in the first place, that’s why I was asking you to set the bar ID etc. First take note that those gradient bars are rendering a material (GB_Fill_T5 to be exact). That means that any change you want to do to the rendering part should probably be done there (you could even duplicate the material). Now there are a few material parameters like color, intensity and fill, that should work correctly if you set them like we did in example layout 3…
So, could you take a look at the example layout 3? Does it work for you?
Also, make sure if you are changing stuff in the widget, prefer to do it in the material instead, maybe this is the problem?