Hi I'm new to Greenfoot and find it fascinating. I've already created a small and simple game with it. I was trying to improve it when I stumbled upon a problem. Actually several problems. First of all, I don't know how to create a variable that is referencing an actor. I've searched the discussion for a few hours and all the popular users type "this" instead of the actual script in which to write this so I was unable to help myself. Another problem I have is similar to this. I can't find the correct way to make two actors delete themselves upon contact. My game is similar to Galaga, but a lot simpler. When the bullet hits the enemy, the enemy disappears, but the bullet is able to fly on, mowing down hoards of enemies at a time. I wish to make the bullet disappear along with the enemy upon collision. I tried the first thing that came to my mind, which was having both actors delete the other, but only the enemy is deleted in the end. I would appreciate help on both of these problems I'm having. Thanks