Hi.I have this code but not working...for some reasons!

. If killer weapon is CSW_HEGRENADE, plugin return _HANDLED!
Code:
public _death_msg()
{
new killer = read_data(1)
new victim = read_data(2)
new wpn = read_data(4)
if(!is_user_connected(killer) || !is_user_connected(victim))
return 1; // ->
if(wpn == CSW_HEGRENADE)
return 1; // reutrn _HANDLED
client_print(victim,"Wow you have been killed with an weapon!") //Just an e.g :/
return 0;
}
Thanks
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