XML Join step for multiple target inputs !!

Hi

Thanks in advance for your support, and here is my problem,

I have two tables in DB, Master & Child, both are related with field MSISDN,

For each row in Master table, I create an XML and would like to add related child to it from Child table.

Example

<SUBSCRIBER>
<MSISDN></MSISDN> <!-- Master Table-->
<IMSI></IMSI> <!-- Master Table-->
<PUK1></PUK1> <!-- Master Table-->
<LIST>
<CHILD_INFO>
<FAFNumber></FAFNumber> <!-- Child Table-->
<PROFILE></PROFILE> <!-- Child Table-->
</CHILD_INFO>
<CHILD_INFO>
<FAFNumber></FAFNumber> <!-- Child Table-->
<PROFILE></PROFILE> <!-- Child Table-->
</CHILD_INFO>
</LIST>
</SUBSCRIBER

How can I do this job using XML join step ? I could not achieve this because XML join step expects one row from target step.

but i got the solution using group by, string replace and other steps.

Please advice how can it be achieved using XML join step. Give me a tip.