database bonita

I have tried simple process variable example given at link http://community.bonitasoft.com/project/process-variable-example using BonitaBPMCommunity-7.3.1-Tomcat-7.0.67. Its working well in bonita studio and with default h2 database configuration with tomcat bundle. But when i configure tomcat bundle with PostgreSQL database its not working well with Bonita ui forms but working well with process containing 6.x forms.

Hi,

I'm using the Engine api, as in the example in github " embeded engine example ". but i discover that it cleanup all my processes after all server restart.

Thanks!