I see now. The 'for each' sounds very nice.
I've tried it but when i try to run the app i get this error
"Temp.exe has encountered a problem and needs to close. We are sorry for the inconvenience."
I add a box to the frame,
I create the condition "always" then action fastloop "fall" no.of boxs amount of loops.
Then next event condition, on loop "fall", + condition "for each box", then the action set box.y to box.y +1
Then i get that error.