ERROR in
action number 1
of Create Event
for object obj_gm:

Error in code at line 2:
    sprite_index = obj_load_resurs.sp_gm_strip;
                    ^
at position 33: Unknown variable sp_gm_strip

ERROR in
action number 1
of  Step Event
for object obj_gm:

Error in code at line 13:
    if speed>=max_speed {speed=max_speed}; if speed<=-max_speed/2 {speed=-max_speed/2};
              ^
at position 12: Unknown variable max_speed