I want to use it to apply some changes at same time on different layers.
Imagine that I have layers named like this coordinates (layer2-0, layer-2_0, layer0_-2...) and I want to apply some transform opacity at same time for each row of layers *3) (2,0) (-2,0) (0,-2) (-2,0) (1,1) (1,-1) (-1,1) (-1,-1)
After that, an other button to transform all layers 2)
The same for 4)... etc etc...
I could be something like for x=value; x<...;x++ expression... but I'm not a programmer and I'm stuck.