The flag "b" is to be replayed forever, you can stop de task seting an ID and make remove_task(ID)
PHP Code:
set_task(1.0, "PermanentHud", 0, _, _, "b")
public PermanentHud()
{
set_hudmessage(255, 0, 0, -1.0, 0.35, 0, 6.0, 1.0, 0.0, 0.0)
show_hudmessage(0, "Players Alive: %d", cts)
}
Sorry for my bad english :C