var wx_range=[5,10,25,50,100,150]; var wx_index=3; setlistener("/sim/signals/fdm-initialized", func { setprop("instrumentation/nd/range",wx_range[wx_index]); # print("Flight Director ...Check"); settimer(update_fd, 30); }); var set_range = func(dir){ wx_index+=dir; if(wx_index>5)wx_index=5; if(wx_index<0)wx_index=0; setprop("instrumentation/nd/range",wx_range[wx_index]); }