serverside persistanceManager and DevForce "enum"

Hi,
I have some logic on the server. I get a persistance manager from calling a ServerRpcPersistenceDelegate.
I can load and save entities but it looks like the enum classes behaves another way than on the client.
to test equality I call code like

Return user.ADRESSETYPE Is ADRESSETYPE.postAdresse

This will return false even when a "watch" will show that the codes that identify the "enum" are the same.
I tried to override equal method but it didn't had any effect
Do you have any comments?

Dominique