Passing the selected row to another action

[gcor71]

1. In view MY GROUP (filtered to show a single, user specific row), there is an inline table of RELATED SECTIONS.
2. In the same MY GROUP view is an inline table of RELATED MEMBERS, filtered to show only rows for a selected SECTION (this selection is currently stored in a separate USER table).

My objective is to remove the need for the user to manually update the selected SECTION on the USER table and instead have the field updated when the user clicks a row in the RELATED SECTIONS inline table,

I believe I need two actions.
ACTION 1 - "Data: execute an action on a set of rows" attached to rows of the inline RELATED SECTIONS table.  When a row is selected, this action fires. and calls ACTION 2.
ACTION 2 - "Data: set the values of some columns in this row" on the USER table, to set the selectedSection column to the value of sectionID in the row clicked on the inline table. 

How can I "pass" the selected row (sectionID) from the inline table into the column being updated in the USER table?

I can't see how to reference the clicked row (and key value) in the second action.  Help?!

Action 1

Action 2