When creating a new PowerApp using the Power BI integration, you get an additional data source – PowerBIIntegration that serves as the connection to the Power BI report. Whenever a filtering action occurs in the Power BI report, this information is available in this property.
During the PowerApps creation action I selected the action to add a new form which in the next step needs to get a connection to the Article table (which holds the additional article details).
Check out the entire series too.