Hi,

I have tried to calculate number of order which has item in specific item category in desired price range. 

So I use this criteria;
- Type = Invoice
- Main Line = false
- Item : Name = dose not start with Vat
- Account Type = is any of Income, Deferred Revenue
- Item Type = Is any of Service, Other Charge, Non-inventory item, Kit/Package, Inventory Item
- Item = Is non of NML Logistic (this is shipping item)

Result
- Item : Item Category (Group), Summary Type = Group
- Formula Numeric, Summary Type = Count, Formula = CASE WHEN TRUNC ({amount}) between 0 and 0 THEN {internalid} else 0 END

The result return that number of order of each item category is all count more than the actual for 1.  I'm not sure which criteria or formula is wrong.  Please advise.  Thank you in advance.