so, first I tried to make a material fade from black to transparent in a widget, when the game starts.
The widget gets drawn as expected but I get an error message telling me it can not read from the (user-Interface)-Material when it should change.
I didn’t know if something is wrong with the alpha of the texture or something, so i tried changing the color of the material with a vector parameter but I get the same error-message, the color doesnt change.
What am I doing wrong? Can somebody please help me out?