[flexcoders] can you set a function to trigger when a variable changes?

[hank williams]

I have a variable, lets call it foo, that may change from time to time. When it changes I want certain of what one might call subscribing objects to be notified that the variable has changed. This gives these objects the ability to update themselves or take necessary actions.
I am thinking this could be tied into the binding mechanism since this is a subset of what binding does.Any insight greatly appreciated.Hank

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