B4J Question Returning to B4J App after POI Excel Spreadsheet Closed

You can create a Excelsheet without leaving your app.

What exactly do you mean by "finished with an Excel Spreadsheet"?

Sorry I wasn't clear with my question. I have a choice/button on my main app screen that selects an excel spreadsheet - I am using excel to create a report and excel fires up with all the data as required. The user then manipulates that and prints it. They then kill the spreadsheet and expect to be back in the application (B4J). Unfortunately the app dies and you go to the normal windows environment where they have to select the app again.

I was looking at Start/Stop message service and that comes back to the app but the app becomes non responsive?