SSRS Formatting

I need the below formula formatted “$#,#0.00” and it won’t do it. I think it’s possessed!

Would some one be so kind as to take this formula and format it for me? I would really appreciate it!

=FormatNumber(Sum( iif( Fields!Calc_OrderRelCounter.Value = 1 , CDbl( Fields!Calc_ExtPrice.Value ),CDbl( 0.0 )),“Group1”) - Sum( iif( Fields!Calc_OrderRelCounter.Value = 1 , CDbl( Fields!DocDiscount.Value ), CDbl( 0.0 )),“Group1”),First(Fields!DecimalsCost.Value, “RptParameter”))

Thank you!

Never mind I figured it out. I just created a calculated field then formatted that. Brain fry I guess.