[RESOLVED] Suppressing Group Based on Sum of Group? CRXI

Hey,
I am trying to only show groups that are within a total range that the user is passing it. In this case I am prompting the user to enter a minimum and maximum amount. I want my report to show only the groups that have a sum in that range. I tried putting the following code in the group suppression expression builder, I don't get any errors but I do get totals showing up that aren't in the range.

Code:

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{?Minimum Amount} >  Sum ({Order_Header.Order_Header_Total_Retail}, {Order_Header.Order_Header_Agent_Number}) or {?Maximum Amount} < Sum ({Order_Header.Order_Header_Total_Retail}, {Order_Header.Order_Header_Agent_Number})

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