Your problem is this line:
CloneTrooperHealth=0 -> System Go to go to level
and the other lines where you compare if the enemy has health zero.
The Variable you set to 0 at the end of the fight is still zero if you switch back to your level-menu and the event sheet is one big loop. So every time it compares the health variable and it is set to zero it switches immediately back to you level menu. So the click in the menu works but it switches so fast back to the menu you doesn't see anything of the other layout. You have either set the health to another value then zero after beaten the enemy or have a variable set when a level is beaten and compare against this variable.