Hey next time take a quick glance at the parking brake set indicator light on the nose gear. Thats if it's working!wow that is a major oops. yesterday, the airbus at my city forgot to set the brakes but yet gave the indication for us to disconnect the towbar and the the plane rolled into the towbar after the disconnection. very minor damage if any but the pilot called us after landing and apologized for his failure to se the brakes