That would be equivalent to 

  return preExistingObject["inString"];

For the current object, use this["inString"].


--- In [email protected], "Matt Maher" <[EMAIL PROTECTED]> wrote:
>
> I have a hard question to ask as I don't know the terms to use for 
it.
> Basically, I want to use a string variable to set what member 
variable
> to pull from another object
> 
> How can I make something like the following work:
> 
> function fun(inString:String):String {
> 
> 
>                  return preExistingObject.eval(inString);
> }
>


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