FX9600 Autostart Script at Startup

Good morning,
I developed my Java Embedded Application and I uploaded it on my FX9600 with its start & stop script (not using the procedure explained in the tutorials because for me it's not working but by manually build an executable jar and upload it by FTP).
The application is correctly working also using the start&stop toggle button on the webapp but the Autostart flag is not working.
Obviously I haven't got any privilege to add the autostart script into init.d.
Is there any way to make my application running at startup without making trouble with configuration?

Please I need to send away a machine very soon with this application.
Thank you in advance,
Annalisa.