[Gavino]

Originally Posted by martin53

To stay indeppendent from number of instances, maybe better style to define inside RTE, after check that they're undefined:

GScriptClip("""
    ...
    try { __ = RTE_myVar%%%%%% } catch(err) { global RTE_myVar%%%%%% = 0 }
    ...
    first use of RTE_myVar%%%%%% in RTE
    ...
""", local=true)

An alternative would be to initialise in the function, but outside the RTE, avoiding a try/catch on each frame.

Eval("global RTE_myVar"+string(RTE_InstanceNumber)+"=0")

Both approaches are a bit ugly!

If staying with the try/catch approach, note the assignment to __ is unnecessary:

    try { RTE_myVar%%%%%% } catch(err) { global RTE_myVar%%%%%% = 0 }