Weapons that level up with the player?

So, in my game, i'm having the player use a titular weapon throughout. It would be useless to let them keep using the same weapon regardless of thier level, however, if I had said weapon level up with the player, this could be avoided. Similarly to Varric's Crossbow in Dragon Age 2, every time the player levels up, the Weapon should level up with them, becoming more powerful. Is there a way to do this?

Would this work for you?

http://forums.rpgmakerweb.com/index.php?/topic/22013-equipment-level-base/

Or this:

http://www.rpgmakervxace.net/topic/1536-equipment-levels-up/

Yes! The second link was perfect :) Thanks a bunch :)