attach and Dettach an object by other object

Hi

i want to make a hat that when i wear it a HUD is attach to change his color.
just watch and please say if i am right...ok?

i know that to do that, ill need to put the HUD in the hat's inventory and llAttachToAvatar the HUD from the inventory (right?), when i remove the hat ill use the llDetachFromAvatar on the HUD (right?)...

now, when i unwear the hat and the HUD is Dettach, i assume the HUD is going to the invetory (my inventory not the hat's inentory - right?).

ok, how can i make that the HUD will Deleted? i mean when it dettach when i remove the hat... i dont wont the HUD to go to my inventory... if i wear and unwear the hat several times my inventory will be full of many of that HUD... and this is annoyig...

thanks in advance

Rather than have it dettach have the HUD die using llDie()

i red about the llDie in WIKI and there is a problem in what you say -

Caveats:
Has no effect if called from within an attachment; there is no way to delete an attachment.
To detach an object from the avatar call llDetachFromAvatar


as you see, there is o way to make the object die while it attach... and i think that the llDie doesnt work on object while he is in inventory...

what can i do?

Yep your right, my post was totally of the mark , guess I wasnt wide awake when I answered that one. I was thinking of normal prim objects.
Ther eis no real solution as such. You can rename teh object prior to teh dettach so you know its dead and add a ll\die in teh on rez event which should delete if you drag from inventory but really there is no fool proof solution at present.

Sadly you can't rename attached objects at the moment. You used to be able to, but it's borked.

the object rezzes the hud from its own inv
hud asks perms to attach
I type yes
Hud comes up on screen
variable "gAttached" set to true

When finished, press close command,
something like

llShout (dedicated_neg_channel, "Die, you object!)";
setPerms
llRequestPermissions (llGetOwner (), PERMISSION_ATTACH);

    run_time_permissions(integer perm) {
        if (perm & PERMISSION_ATTACH)  {
            if (!gAttached) {
                llAttachToAvatar(31); // CENTRE 2
                gAttached = TRUE;
            } else {
                llDetachFromAvatar ();
                llDie ();   
            }
            
        }
    }

still leaves a copy of hud in your inventory