ValueList from different Service with Annotations

Hi everybody,

I have a question regarding Annotations.

I successfully added a ValueList Annotation for a property inside the _MPC_EXT class.

Now I want to add another ValueList Annotation for a different property, but the EntitySet I want to address is in a different Service. So my question is: Am I able to access EntitySets from a different Service for a ValueList annotation and if so, how can I do that?

For clarifiation:

Let's assume, that I have Service A (with entity Businesspartner and entity set BusinesspartnerSet) and Service B (with entity Invoice and entity set InvoiceSet). The invoice entity has a property called partner, which should have a ValueList to find a specific Businesspartner.

Thanks a lot

Nils