Pass Parameter from Highlighted Row using a Button

Summary

Highlight row, click a button, navigate to another screen to view results

Content

Hello,

How do you collect the row id value in a variable where the user highlights the row, then clicks a button to drill to the details in another screen?

I know how to drill using the TableFirstSelectedRowChange action but I am unsure how to do the above from a button.  There will be multiple buttons on the screen that drill to other areas based on the row id.  

All data is in business objects so I am not using REST to go outside and grab a value.  I simply want the value on the screen based on the highlighted row.