How to get the item value of enumeration in ood and use it as condition

I have a reqirement as this, during creatin an object, I defined an enumeration Enum1 and it has some items, the maximum value is Enum1.MAX, I wan to use it as a condition in this object, I tried like this:  

<Condition refLink="AE409B41-F2C2-43C3-9765-0F4C31FA8B49.MAX_POS" comparator="GreaterThan" value="1"/>

here, the RefId AE409B41-F2C2-43C3-9765-0F4C31FA8B49.MAX_POS is for Enum1, but it doesn't work, it's possible to implement this funtion? or how should I do?