@juhar, I have done what you said and x terminal finds the fmtx files
/usr/lib/hildon-desktop/lib-simple-fmtx-widget.a
/usr/lib/hildon-desktop/lib-simple-fmtx-widget.la
/usr/lib/hildon-desktop/lib-simple-fmtx-widget.so
/usr/lib/hildon-desktop/lib-simple-fmtx-widget.so.0
/usr/lib/hildon-desktop/lib-simple-fmtx-widget.so.0.0.0
/usr/share/doc/simple-fmtx-widget
/usr/share/applications/hildon-home/simple-fmtx-widget.deskt
These are the files but the widget wont appear in the widget and shortcut selection