Objects with physics not saving variables

[UnDeaD5]

Hi, I tried to save a variable to a static object (an Omnidirectional antenna), but with no luck. The object is saved, but the variable I assigned to it isn't. I tried the same with a Portable Generator and the same happened. Both of these objects have physics, so i'm thinking that might be the problem. Static objects without physics work fine just like everything else. Any ideas?