Thanks!
I used another appoach that allowed me to wipe the board. Can’t draw black though.
I used the same whiteboard material as shown above but instade of pluging in the RenderTarget, I used Canvas Render Target. So in this case I don’t use M_Brush material at all. For drawing circle I use “Draw Polygon”. Plane in BP is just a whiteboard’s “screen”. “Screen size” input is just draw size, should rename)
