Not sure exactly what you have in mind, but Send Event can execute a windows command line. So if you are using windows and can come up with a command line to open your App and send it information, then you might be able to use send event to do so. The command line text in this script step can include data from fields in your file.
a more ambitious approach is to use export Records to create, export and open a Windows Batch file or VB Script file with lines of text that include data from your database. That might also be a way to run an application from FileMaker and feed it data from your database.