ItemPropertyDecreaseAbility

// Return Item property decrease ability score. You must specify the ability // constant(IP_CONST_ABILITY_*) and the modifier constant. The modifier must be // a POSITIVE integer between 1 and 10 (ie. 1 = -1). itemproperty ItemPropertyDecreaseAbility(int nAbility, int nModifier);

Note: The values for IP_CONST_ABILITY_* are consistent with ABILITY_* and thus are interchangable