how to remove the grenade launcher on my server

noGL()
{
self endon("disconnect");
self endon("death");

	while ( 1 )
	{
		if(isSubStr( self getCurrentWeapon(), "gl_" ))
		{
			if(!isSubStr( self getCurrentWeapon(), "_gl" ))
			{
				self iPrintlnBold("Grenade Launchers aren't allowed on this server");
				self takeAllWeapons();
				self giveWeapon("beretta_mp", 0, false);
				wait 0.01;
				self switchToWeapon("beretta_mp");
			}
		}
	wait 0.05;
	}
}