RTF Template : Hide Row based on SUM() after complex Regrouping

Summary

Has anyone tried to Hide a row after regrouping the data and the conditions should be based on the SUM() of a column obtained after grouping

Content

The XML data is generated in a specific hierarchy. In the RTF Template we are grouping the data based on multiple columns and displaying the data in a tabular format. The Report has a Transaction Amount column

The Transaction Amount is summarized at the lower most group and the value is calculated correctly. We are able to get the output as per the required format. 

 But there are few rows which have the total Transaction Amount is net zero. We need to hide this row.