SOAP UI:Not able to encrypt message using AES-256,RSA

Hi Team,

I am trying to test encryption by creating java key store on my existing webservice using algorithm as AES-256, transport algorithm as RSA_OAEP_MGF1P.
When i set the outbound security policies in SOAPUI with the configuration specified as above i am getting an error as given below:

"WS-Security process failure:FAULT CODE: FailedCheck FAULT MESSAGE: The signature or decryption was invalid"

But when i am doing the encryption using algorithm as AES-256 and transport algorithm RSA_1_5,it works fine.

Please help me on the same!!.

Please find attached the setting's we have done on SOAPUI.

Regards,
Vivek