in wed they are not "in engine" yet(i know you are talking to Lukas about lite-c part), and you can actually change the string1 and string2 from plugin if they are NOT empty. If they are empty, you get an empty pointer and if try to change that you get a crash. If you alloc space for string1 and string2, then your code does not crash but string1 and string2 does not change either.