First, place the actor in the world where you want it. Then, right click on the actor and select "Inspect" from the pop-up menu. You will be able to find the x and y location values from there that you can then put in your code. EDIT: On second thought, easier would be to place all your actors in the world where you want them and select "Controls>>Save the world" from the menu bar. The code will automatically be put in your code for you. Note that you should remove all codes attempting to place those actors in your world first. Also, note that for any actors that you keep references to, you should do the inspection steps and add the code yourself (you could do the saving way, but you would still have to edit the created code to work properly).