function _itemsChanged(oItem, sMutation) {

		if (sMutation === "insert") {
			// observe items for update of key and text
			this._oObserver.observe(oItem, { properties: true });
		} else {
			this._oObserver.unobserve(oItem);
		}

		if (!this._bMyItemUpdate) {
			_triggerConditionUpdate.call(this);
		}

	}
This property must not be set for the <code>MultiValueField</code> control.

@param {int} iMaxConditions More than 1 condition must be allowed in <code>MultiValueField</code>
@returns {this} <code>this</code> to allow method chaining.
@public
@deprecated As of version 1.93, this property is not supported for the <code>MultiValueField</code> control.
@ui5-not-supported