Mapping Nullable Enum to database int field that allows null

[ActiveX]

All;

.net, C#

How can I map Nullable Enum property on an entity to database int field that allows null?

I have this but it doesn't work:

<property name="ItemType" type="Int32" column="ItemType" not-null="false" />

When the entity is queried/being hydrated, it will throw:

Invalid Cast (check your mapping for property type mismatches); setter of PrlSystems.AccountingLibrary.Model.Item

Interestingly, if the ItemType property would not be nullable type, this mapping works fine.

Also, I am using nullables for DateTime, and other build in types, and it works fine. I just map these to their corresponding types.