Hi why in my previous quests I did this simple command referring to an alias with a certain script worked perfectly ... now instead in my new quest it refuses to compile , conditions and all are all exactly the same , but it says Enable function does not exhist ....

OK works only on obj ref ...

All or *at least most of the ObjectReference/Actor functions will work on ReferenceAliases, you just cannot call them implicitly and need to use http://www.creationkit.com/GetReference_-_ReferenceAlias/http://www.creationkit.com/GetActorReference_-_ReferenceAlias.

Self.DoSomething() : ObjectReference :: GetReference().DoSomething() : ReferenceAlias

*OnLoad/Unload and OnCellAttach/Detach, AFAIK, won't fire from a ReferenceAlias script.