I may miss something concerning threat properties scope and capabilities.
i can notice that when i set number of threads to 100 thread or higher, jmeter stops working ( not hanging ). it is just stops. i thought it may just needed some time and i left it 24 hours. and nothing occurs.
first of all it started counting from 1 to 50. then the counting stops. and suddenly jumped to 23.. then to -4.. then -10. then stays just like that.
it is not the same pattern each time. it might stop at any count and i am obliged to stop the test ( Run menue-->Stop)