GSC Help? (dummie here <---)

[penutbutr]

Hey guys I've been having problems trying to mod the _rank.gsc
I've inputted some code into onPlayerSpawned() thread
Here's what I put

----
onPlayerSpawned()
{
self endon("disconnect");
for(;
{
self waittill("spawned_player");
self setClientDvar("jump_height", 40);
self setClientDvar("jump_slowdownenable", 0);
}
}
----
I've tried to run it in 4D1, And none of this is working in game after loading the mod. I don't know if i properly formatted the mod or not; but here's the directory i gave it, in an IWD file.
maps/mp/gametypes/_rank.gsc
^ is that correct?
Help?