Hoe to display ProjName in the ProjInvoice Report

Hi

I need to fetch the Project name in to the ProjInvoice Report, IN that report ProjId is there , so i am tring to write the following code to fetch the proj , but i am not able to display the Project name.

display ProjName projName_USS()
{
;

return ProjTable::find(ProjInvoiceEmpl.ProjId).Name;
}

can any one help me how to retify this problem.

Project->Reports->Invoice.

Try to use ProjInvoiceJour.ProjInvoiceProjId instead