Can I submit my own form into Bonita Engine

I want to develop web application by SpringMVC Leave Management. The process of approval will be invoked Bonita Engine. The screen of Leave request is HTML webpage. I want to submit the Leave request from Spring Controller (run on Tomcat A) into Bonita Engine . Then the request is reviewed to approve or reject by manager via Bonita Portal (Run on Tomcat B).

Is it possible?

Thanks,
Thach