>Is there a way to check to see if a variable exists or not. For instance, if var1 exists, do whatever, but if not, declare it and then do it.
>
>Same question goes for arrays and objects. If form exists, do something... if not, do something else or create it.

vartype(var1) <> "U" && variable exists

type("var1[1]") <> "U" && variable is an array of unknown dimensions