set the clip ammo of default weapons

[Xwad]

Is it possible to set the maximum clip ammo of a default weapon, without setWeaponPoroperty? Just becaouse im working on a custom weapon script and i added different skins for 1 weapon. So i want to make that if a player has skin id 20 then his mp5 weapon maximum clip ammo will be 20. But if the player has skin id 30 then his weapon maximum clip ammo will be 40. Is this possible somehow? I saw a function on wiki called: getPedAmmoInClip. Is there a same function with set? Thanks !