lol he's a newbie stfu you condescending mongloids
yeah dude whatever roleplay you do is ok as long as it's not retarded - however think about the setting and how realistic it would be and under what circumstances it's happening. the guy isn't allowed to shout "he has a gun" and run away, thats not how it works, but what you were doing isn't 100% cool either.
if you're going to set up muggings, make them elaborate, make them like ambushes and give something to the other party in terms of roleplay rather than throw emotes to get items and then run away.