If a PO status is Closed for Invoice then no one should be able to update the DFF at schedule level

Hi Team,

I have a business requirement: If a PO status is “Closed for Invoice,” then no one should be able to update the DFF attribute at the schedule level.

I am attempting to implement this using Page Composer and EL expressions but have not been successful so far. Below are the EL expressions I have tried, which did not work for me. The attached screenshot shows where I am trying to add the EL expression.

 

#{bindings.StatusCode.inputValue == 'Closed for Invoicing'}

#{bindings.ScheduleStatus.inputValue == 'Closed for Invoicing'}

#{bindings.Status.inputValue eq 'INVOICING_CLOSED'}

#{bindings.scheduleStatus.inputValue eq 'CLOSED_FOR_INVOICE'}