Generating new embedded firmware with new application

[pb]

Hi all,
i am trying to add new apllication to pfsense embedded.
I'am working in VMWare Developers Edition. Here I added the needed application and everything in working fine.
Then, within the VMWare environment, I generated the embedded firmware with the command ./build_embedded.sh
and transfered it to the flash. Everything seemd to be fine, the image was successfully generated, but, after rebooting the Wrap board  I had the surprise to find no new application installed on it.

How can I add new applications to the embedded firmware (Wrap board) just working in the VMWare environment?
I'd like to generate a ready to go image for the embedded firmware within VMWare.