How to create XML input using Axiom OMElement?

I have a service which expects an XML input as one of its parameter for a method. In java I have done with the WSDL2java conversion and method identification.

Code :

Method Name: FindIssues()

FindIssues findIssues=new FindIssues();
findIssues.setUsername("user@example.com");
findIssues.setPassword("password");
findIssues.setSearchCriteria(searchCriteria);

Fine. Now the third parameter is of the type SearchCriteria class which expects OMElement.

So I should form the below XML input with the OMElement.

    **<searchCriteria>**
       <FindIssues>
       <ReturnSchema>N</ReturnSchema>
       <IssueStatus>Open</IssueStatus>
       <IssuesNextActionBy>
       <UsersUserID>user@example.com</UsersUserID>
       </IssuesNextActionBy>
       </FindIssues>
    **</searchCriteria>**

Can someone help me out on forming the XML input with the OMElement?