call of duty 4 custom challenges error

[serthy]

Replace in maps/mp/gametypes/_rank.gsc (Line 1025)

		level.challengeInfo[baseRef]["levels"]++; 
	

With:

		level.challengeInfo[baseRef]["levels"] = int(level.challengeInfo[baseRef]["levels"]++);
level.challengeInfo[baseRef]["levels"]++; 
	

That doesn't look right to me..

also the error says ++ must be applied to an int (applied to undefined), so level.challengeInfo[baseRef]["levels"] does not exist