How do I loosen the brass regulator from the babeque grill. I need a new regulatore but the can't remove the old one. Please help

Are you talking about the connection to the tank or to the hose? This could be a reverse threaded connection, lefty tighty. Mr. Heater Hose and LP Regulator - 12ft. Length, Model#F273072

Loosen from the hoose

Open my link from the last post, most new regulators come out of the box with a new hose attached. What you are working on is regular thread, turn counterclockwise to loosen.