How to add Enterprise custom field to display actual costs from a different DB in Project Server?

I am trying wrap my head around how data is being served to Project Server.

I am trying match up a value (actual cost) to project lines in an Executive View of Project Center which displays each project. This actual cost comes 开发者_如何学Gofrom another database; the accounting database.

I am assuming I have to build it in an OLAP Cube.

Anyways, I would like to know if anyone knows how to link the cube to the enterprise custom field.

The answer is you can't.

Either use OLAP or inject into SQL the modifications.