You know, I can't actually remember whether Odlov and DashSora have trigger-conditional object properties (like flags, thrust, force, etc), on their list, but a feature like that would be the best way to do what you want to accomplish

(setting the default flag of the object to 8, changing it to 0 through a trigger action)

If something like that could be implemented, it might be the coolest thing ever, since there would be potential for so so so much more than this one idea alone