How do I use an attribute in a workforce business rule

Summary:

Content (required):

When we copy data from workforce to the plan cube, we need to break out the employees by Class. We do not have Class in the Workforce cube, so we added an attribute to the Employees to denote their Class. We need to add the attribute to the XWRITE business rule so that it will copy to the corresponding Class in the Plan cube.

WF Attributes Example: 06, 10, 11

Plan Class Names: Class06, Class10, Class11

There is a snippet of the rule below with only one account as the example. (we will be copying over 10 accounts) But it doesnt seem to work.