Qlik Sense Set Expression w/ Variable

[jaymeknapp]

Greetings!

I'm trying to create an expression that will give me sales (for the previous month PM) for a specific location (St.Cloud).   This expression does not seem to be working for me??..??

=SUM({$<[Location Name]={'St.Cloud'}>}(=$(vTotalSales(PM))))

What am I missing?

[rwunderlich]

What is the definition of 

vTotalSales

-Rob

[jaymeknapp]

vTotalSales =

Sum({$<[%dateflag_$1]={1},
[Transaction Line Accounts Account Number]={404120,404110,404100,404118,404119},
[Transaction Type]={'Invoice','Cash Sale','Cash Refund','Credit Memo', 'Bill', 'Journal'}, $(vExcludeDateFields)>} [Transaction Line Gross Amount])