Stop processing iRule by referencing a variable

I've tried what you suggested hoolio and the variable gets assigned, but unfortunately it doesn't stop processing in the second rule. I've tried both "return" and "event disable" and the staging pool still gets assigned and clients are given access regardless of where they're coming from.

What I'd like to achieve is filter access to "staging" environment to be allowed only for internal users defined by the address data group.

I thought those two iRules will do the trick, but they aren't.