To Run The Loop Test in the SOAP UI Free Version

Hello Team,

I have to run the Loop Test in the SOAP UI Free Version for 50 Times.How to Execute it?

Following is the Request-

<er-request>
   <payload>
      <renew-purchase-package-request>
         <msisdn>444444444</msisdn>
         <subscription-id>532643</subscription-id>
      </renew-purchase-package-request>
   </payload>
</er-request>

Note:Subscription Id will be the same But the Renewal will happen 50 times against same Subscription Id.

Can you please help me out how to execute the scenario using Groovy Script.