soapUI maven Integration Issue

Hi,

I'm trying to do the maven integration of soapUI projects. I'm following the instructions given in the in following link
http://www.soapui.org/Test-Automation/maven-2x.html

But when I'm doing a maven build I'm getting the following error :
java.security.UnrecoverableKeyException : Password must not be null.

I am specifying the password both in the soapUI project and pom.xml.

Help !!!!