It seems like i tried the wrong path (because I made a launcher).

mimosa already told you the solution (days ago). But you just didn't want to read. Next time, before posting some thread please try to google it first. The solution with the xkb plugin is the second one. That wasn't hard, was it?mimosa wrote:Right click on panel
Add new items
Scroll down to "Keyboard layouts"
... and select your desired options