PowerBI and PowerApps

[vsslasd1]

I have a PowerBI Report and an embedded PowerApp App. 

The PowerBI report has a table with about 900+ rows in it. The intent was when one row in the PowerBI Table has been selected, then that record would appear in the embedded PowerApps App, so the data could be modified in PowerApps, and a button clicked. 

I watched this video:

https://www.youtube.com/watch?v=LxKLLgUhlBo 

My button executes an MS Flow routine, which calls a stored procedure, and then sends a PowerBIIntegration.Refresh() command. 

This was working rather nicely last week, and then something changed. No data appears in the PowerApp text boxes any longer. 

It seems that when no rows are selected in the table, all of that data is sent over as a collection to PowerApps. But when a single row was selected in the PowerBI Table, no data is sent over to PowerApps. 

My text boxes have something similar to the following in the Default property: First(PowerBIIntegration.Data).ObjectName 

What is the appropriate syntax to use in a PowerApps App to display only the PowerBI highlighted row in PowerApps ? Perhaps I need to change the syntax in PowerApps. But this was working last week....and now it's not...

Thank you.