the old idea that i had is that works with expansion beams, and compression ones, but the new idea is another thing: there are beams that act as sensors and when they break in a crash (i put a breakgroup that breaks all the sensor beams) and when they break the lua interpret that in wantedbeam and gives an electrics signal that is interpreted in thr Jbeam to create an electric, that trigger the airbag hydros, similar to the jsz system, but it trgger an lua error, i already opened a thread but i had to fix that (and counting that the lua and electrics documentation is really poor)