and move your events for: enemy1 = 3, enemy1 = 2, enemy1 = 1 to sub-event of On destroyed
+enemy1: On destroyed
+ enemy1: enemy1 = 3 -> powerup3: Set position...
+ enemy1: enemy1 = 2 -> powerup2: Set position...
+ enemy1: enemy1 = 1 -> powerup1: Set position...