Routing Expense Approvals Via Cost Center

We have a requirement where we have to route expense report approvals via both Cost Center and Expense report template name. I am currently defining rules in the ExpensesRuleSet Assignees.

 

The rule is working fine when I am only using the condition for Expense Report Template Name, but when i add the Cost Center Condition the BPM rule is erroring out.

 

The Condition i am using is :-
IF Expense Report/expenseVO.Expense Template is "Corporate Travel Expense" and
Task.payload.empDefaultCostCenter is "****".

 Then.
Approval Group

Kindly suggest an solution for this, or if possible please provide the cost center to be used on Condition in BOM.