ok...
If I can put together a decent post :lo:beetween the laughing salvos from Andy's ed.
Seriously, you don't need a decompiler. If you read some of the tutorials, look around on the forums and then open up the map in HL you would wish to copy something from. I can imagine a lot of different ways or approaches to this problem appearing in your head then.
How could this be done? a trigger_once to a multimanager to... etc?
Then you start to try out stuff and eventually get it working.
And you will feel much better too than if you had decompiled, I can promise you that.