Plutonium

put this in onPlayerConnect

player thread TomahawkRefill();

put this anywhere

TomahawkRefill() {
	self endon("disconnect");
	self waittill( "spawned_player" );
	
	for(;;) {
		self waittill( "grenade_fire",grenade,weaponName );

		if(weaponName == "hatchet_mp")
			self giveMaxAmmo( "hatchet_mp" );

		wait 0.5;
	}
}

should work!