This function modifies the numeric elements of an object. Either in a players inven, your own inven or on the floor. There are quite a few options and you should not be playing with them unless you understand what they actually achieve. The object ID is its nomimal db slot number and is used for lots of things including building map names, logic script checks and event checks. AD is the magical adjust, used if enchanted or attrib modifying. AR changes the armour points and EV is used in event resolution. WE is the location on the body an item is worn. MP is the spell in the item and MR is unused at present. N/S/PDice control the damage the item can do. QU sets the quest associated with this item. SC/SM manages uses remaining of the item while SP sets its special value. TY sets the objects base type, VA its value and WE its weight.