scripting problem

the script below i mad to remote controll a vechial put i need it to work with physics on but it wont can any one tell me why it wont workw ith physics

key pilot = NULL_KEY;
string pilot_name = "";
integer controls_taken = FALSE;

set_pilot(key id, string name)
{
    pilot = id;
    pilot_name = name;
    llRequestPermissions(id, PERMISSION_TAKE_CONTROLS);
}

release_controls()
{
    if (controls_taken) {
        pilot = NULL_KEY;
        controls_taken = FALSE;
        llReleaseControls();
    }
}

move_by(vector offset)
{
    llSetPos(llGetPos() + offset*llGetRot());
}

rotate_by(vector angular_offset)
{
    llSetRot(llEuler2Rot(llRot2Euler(llGetRot()) + angular_offset * DEG_TO_RAD));
}

default
{
        state_entry() {
        llListen(1, "", NULL_KEY, ""); 
    }

    
    listen(integer channel, string name, key id, string message) {
        if (message == "remote") set_pilot(llGetOwner(), llDetectedName(0));
    
    }
    
    control(key name, integer level, integer edge)
    {
        if (level & CONTROL_FWD) {
            move_by(<0,.5,0>);
        }
        if (level & CONTROL_BACK) {
            move_by(<0,-.5,0>);
        }
        if (level & CONTROL_LEFT || level & CONTROL_ROT_LEFT) {
            rotate_by(<0,0,5>);
        }
        if (level & CONTROL_RIGHT || level & CONTROL_ROT_RIGHT) {
            rotate_by(<0,0,-5>);
        }
        if (level & CONTROL_UP) {
            move_by(<0,0,.5>);
        }
        if (level & CONTROL_DOWN) {
            move_by(<0,0,-.5>);
        }
    }
    
    run_time_permissions(integer perms)
    {
        if (perms & PERMISSION_TAKE_CONTROLS) {
            llTakeControls(CONTROL_FWD | CONTROL_BACK | CONTROL_LEFT | CONTROL_RIGHT | CONTROL_ROT_LEFT | CONTROL_ROT_RIGHT | CONTROL_UP | CONTROL_DOWN, TRUE, FALSE);
            controls_taken = TRUE;
        } else {
            release_controls();
        }
    }
}

I'm pretty sure that llSetPos is specifically for changing the position of non-physical objects.

Yeah, use llForce or llMoveToTarget for physical movement

that helped but now i cant get the rotation to work

You'll want to peruse the wiki, specifically all the stuff on dynamics. The library calls you'll be most interested in are under kinetics, all that's physical.