listen and channels error

not sure what i did wrong but here is what is happening, i have a hud that detects owner name and sends "Mrc Homewood lightson" and the police car picks up that message on channel -28 and i have another that listens for the person on sittarget for chat commands, the chat commands work fine but i cant get the hud commands to work,

BUT!

here is the funny thing, if i make another object add the sittarget and the listen lines for just the hud part it works fine, they dont work together is it posible im doing the channel stuff wrong?

////////////////////////////
integer hanndle;
hanndle = llListen(-28,"","","")||llListen(0,"","","");
////////////////////////////
listen(integer channel, string name, key id, string message)
    {
        key agent = llAvatarOnSitTarget(); 
        if(channel == 0) 
        {
            if(llAvatarOnSitTarget())
            {
                if(message == "hud")
                {
                    llGiveInventory(agent,"PD Cop Car Hud");
                }
                else if(message == "stop")
                { 
                    llSetTimerEvent(0);
                    llStopSound();
                    llSetStatus(STATUS_PHYSICS, FALSE);
                    llSleep(.1);
                    llMessageLinked(LINK_ALL_CHILDREN , 0, "WHEEL_DEFAULT", NULL_KEY);
                    llSleep(.4);
                }
                else if(message == "start")
                { 
                    llTriggerSound("starter",1);
                    llMessageLinked(LINK_ALL_CHILDREN , 0, "WHEEL_DRIVING", NULL_KEY);
                    llSleep(.4);
                    llSetStatus(STATUS_PHYSICS, TRUE);
                    llSleep(.1);
                    llSetTimerEvent(0.1);
                    llSleep(0.7); 
                    llLoopSound("idle",3);
                }
            }
        }
        else if(channel == -28)
        {
            if(message == llKey2Name(agent)+" s")
            {
                llMessageLinked(LINK_ALL_CHILDREN, 0,"s", "");
            }
            else if(message == llKey2Name(agent)+" lightson")
            {
                llMessageLinked(LINK_ALL_CHILDREN, 0,"lightson", "");
            }
            else if(message == llKey2Name(agent)+" lightsoff")
            {
                llMessageLinked(LINK_ALL_CHILDREN, 0,"lightsoff", "");
            }
        }
    }

Uhm... does this really work???

hanndle = llListen(-28,"","",""||llListen(0,"","","";

I'm not sure, but I kinda doubt that you can add listens with ORing them together...

Try adding a separate listener for each channel...

already have, gave them bother there own integer didnt still work try them without the listen removes also didnt work XD

That expression will start two listens (because the LSL language does NOT short-circuit the logical || and && operators), but the resulting value you are assigning to the handle variable is likely to be worthless.

OMFG! im such a noob the problem was with the else if(channel == -2 XD with the else there it bypassed the others lol

That DEFINITELY won't work! It will compile, and it will generate a (useless) integer to dump into the handle integer, however I doubt it will generate the proper handle to remove the listen(s). LOL