A condition can be any expression that the AVM can evaluate to a logical value. The condition can include references to one or more program variables (including array elements), buffer fields (including array elements), or object attributes; you are not limited to the variable, field, or attribute specified in the watchpoint expression.

When you create a watchpoint, the Debugger checks only that the syntax of the condition is valid. The Debugger cannot verify the existence of variables and fields in the condition, as the references to variables or fields might not be in scope.