GSUMZ return the total of all of the values in the date range specified by the Offset and Grouping for the variable.

SYNTAX:

GSUMZ(VarNum,GroupOffset/StartDate,Grouping/EndDate, Decimal_Places, MDL_Rule, optional No_Value_Print) 

VarNum:  The variable number to get the total for.

GroupOffset/StartDate: Used with the Grouping parameter to set the dates to calculate the stat for.  Sets the number of Groups (set by the Grouping Parameter) to be added to set the dates.  See examples below. If this field is a date string (i.e. "07/16/2004") or refers to a cell with a date in it, it is assumed to be the start date to calculate the stat for.

Grouping/EndDate: Used to set which dates to calculate the stat for.  If the Grouping is a date literal string (i.e. "07/16/2004") or refers to a cell with a date in it, it is assumed to be the end date to calculate the stat for. Common Groupings are:

"D" Days
“M” Monthly 
"R" Report Dates
Click here for available Grouping options

Decimal Places: Sets the number of decimal places to be displayed. For variables with decimal places set to "Not Fixed" click here for additional formatting options.

MDL Rule: Sets when to display the MDL symbol (<,>, ND) with the calculated statistic.  Valid settings are:

1 Display MDL symbol if one of the values contains the MDL symbol
2 Display MDL symbol if all of the values contains the MDL symbol.
3 Display MDL symbol if over half the values contains the MDL symbol.
4 Cascade all symbols

No_Value_Print: Sets a string to be displayed if there are no values in the date range.

NOTES:

In Design, Spread Reports use Locate, Group Summary to place this formula on a report.

EXAMPLES: