I’ve found a solution. I’ve created three exclusive switches with onvalues 0,1,2 and without any images. Then I’ve created a stack with three child images which are showing the 3 different switch positions. The stack and the 3 switches refer to the same integer variable. As my switch is a vertically one, I’ve devided the height of my images into 3 parts and positioned the 3 switches above each other over the stack. Now I can click in the top, middle and bottom area of my images to activate the 3 different positions and the stack images are following.