Worklist in Enterprise Portal (Journal Approval)

Dear All,

I have setup a workflow in payment journal in Dynamics AX 2012. User will submit the payment journal in client and their HOD can approve it in the Enterprise Portal.

I am facing some problem in the worklist in the Enterprise Portal. When I click on Action button in the Enterprise Portal, the "Open ledger journal table" menu is missing. 

When I check my AX in VM, there is "Open ledger journal table"  menu. Anyone has any idea for this? (P/S: I am administrator right in AX)

Thanks

Celine