// Creates a new copy of an item, while making a single change to the appearance of the item. 
// Helmet models and simple items ignore iIndex.
// iType                            iIndex                      iNewValue
// ITEM_APPR_TYPE_SIMPLE_MODEL      [Ignored]                   Model #
// ITEM_APPR_TYPE_WEAPON_COLOR      ITEM_APPR_WEAPON_COLOR_*    1-4		
// ITEM_APPR_TYPE_WEAPON_MODEL      ITEM_APPR_WEAPON_MODEL_*    Model #
// ITEM_APPR_TYPE_ARMOR_MODEL       ITEM_APPR_ARMOR_MODEL_*	    Model #	
// ITEM_APPR_TYPE_ARMOR_COLOR       ITEM_APPR_ARMOR_COLOR_*     0-63
object CopyItemAndModify(object oItem, int nType, int nIndex, int nNewValue, int bCopyVars=FALSE);