i think i've found my error

[Aquilonian]

I want to delete something having only his name.If i getReferenceByName and make that reference = null, what i am really doing is nothing, isnt it?Cos its not removing from memory the thing i want to remove;there are other references for it, isnt it?
Maybe thats why my game is so slow

[Dazzer]

object gets deleted only when there's no more references to it. So yeh, there MAY be a reference to it somewhere.Event Listeners, or something.