Page name based on the Grouping or Page break

hi here is my expression for Grouping

OR Fields!LoanStatusDescription.Value ="Approved"

"New Loans",IIF(Fields!LoanStatusDescription.Value ="Declined"OR Fields!LoanStatusDescription.Value

=

"Withdrawn"or Fields!LoanStatusDescription.Value ="Cancelled"

or Fields!LoanStatusDescription.Value ="PNW","LNW","Unknown")))

Now my whole data is in 4 groups New loans,ClosedLoans,LNW,Unknown and has a page break after each group

USing SSRS 2008 R2

How can i write an Page Name Expressions So that when i export to Excel it shows For tabs with this Different Groups on Each page...Like  New loans,ClosedLoans,LNW,Unknown