[ApolloScripter]

Hello, AhmedMohamed first of all, see what Y_Less has questioned you, "0xFFFF" is a hexadecimal value, that when turning into decimal stands for "65535", which is the "issuerid" of the function.

I've had this problem before, I do not know if there is another way to solve it, but I've done a function to call death to the player.
Just do something like this:

PHP Code:

     if(issuerid == INVALID_PLAYER_ID)
    {
        switch(weaponid)
        {
            case 54: //Your switch weaponid, in this case, collision
            {
                if(amount > 99.0) //Here, check if amount is bigger then 99.0, that is the damage caused by a very large drop.
                {
                    //Here, you call your function to kill player.
                }
                 else
                {
                    //Here, just deal damage to the player.
                }
            }
        }
    } 


Creating a function to specifically kill the player in this condition can help, with me it worked.