i need to sum the total amount in the form

[CJLAtoja05]

Service Code	Service Description	ManHour	Labor Rate	Total Amount
<<Start:[Related WorkOrder_Services]>><<[ServiceCode]>>	<<[ServiceDescription]>>	<<[ManHours]>>	<<[LaborRate]>>	<<[TotalCost]>><>
	TOTAL	???

[KON_TROLL]

Then you need to do it in a Viritual column, or set the SUM() expression in Initial value and enable Reset on edit.

[AliceKeeler]

When setting up a view you can set a summary value that can sum a column.

[Steve]

<<SUM([Related WorkOrder_Services][TotalCost])>>