Webi 4.1 - Conditionally hiding rows in a Webi Table

Webi 4.1 - Conditionally hiding rows in a Webi Table

I’ve created a table that includes running totals.  I’m only interested in displaying the Sum row and hiding the detail rows that make up the Sum. 

I created a Hide Variable based on the OriginalRequest ID column:

=If ([Original Request ID] >"A";1;0)

I don’t see a way to apply a variable statement in the report filter. 

I’ve read the following articles, but have not found a working solution for my issue. 

Conditional Hiding of Rows in webi

I saw 2012 response mention of a formula example =If([var1] or [var2]=0;"Hide";"Display") but am unable to reproduce in Webi.

Exclude blank excel rows from report