I select an image from the drop down menu. For example, if I select the first picture in the menu, then the transparency of all pictures except this one is reduced to zero. If I select the 5th picture, then all except the 5th picture have a transparency of 0. Due to the large number of pictures, a long expression comes out, which must be inserted into the transparency of each picture. I would like to do this with a loop. It’s possible?