Land Collision from Linked

Hello.

I'm trying to make it so when my linked prim hits the ground it sends a linked message to the root prim, but for some reason it wont work.

Root Prim:

default
{


link_message(integer sender_num, integer num, string str, key id){

llSay(0, str);

}
}



Linked:

default
{
land_collision( vector pos ){




llMessageLinked(LINK_ROOT, 0, "detected", NULL_KEY);



}
}

The collision is probably passed to the root by default, try an event handler in the root.
If you don't want that, make your child so it does not pass collision events:

default
{
    state_entry()
    {
        llPassCollisions( FALSE );
    }

    land_collision( vector pos )
    {
         // your stuff here
    }
}