How to access a specific column value of a specific row from database query workflow?

In my server-side workflow, I used Run SQL Query activity to query an external database, and used Set Workflow Output activity to assign the query result dataTable to object named myoutputs

In my client-side workflow, I called that server-side workflow using Run Workflow activity. Now I would like to populate some elements on a display form using certain column values of the first returned row from the sql query result (i.e., myoutputs). How should I access those specific column values?

I tried something like = $runWorkflow1.result.myoutputs.row[1]['Column1'], but did not work.

Would you please help?