user defined groovy

Hi there,

I am using soapui-2.5.1 version, I need to access a userdefined groovy "test.groovy"  from the Groovy Script step i created inside my project xml . This "test.groovy"  i have packaged inside folder scripts.testing folder
and i have placed this package inside the bin/ext folder,

where else i need too mention these script package so that i can access

def handler = new scripts.testing.test()
inside the Groovy Script step i created in my project xml....

currently i am getting
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed,
Script2.groovy: unable to resolve class scripts.testing.test()     

Thanks
Neo