Xpath vs receive pipe in Orchestration

Question

Hi,
We receive big XML PO from customers. Each PO has header record, supheader record and Orders record(it loop). After map PO to our standard, i need to create single new order with header and subheader. So xml structure needs to be remain
same. Just have only one order and send it to web service. How can i do this by xpath?
I used something like this but it was giving all orders instead of just one.
sXPath = System.String.Format("/*[local-name()='Request'][./*[local-name()='PO']/*[local-name()='Orders'][position()={i}]]");
Schema something like:
<Request>
  <PO>
    <Header>
        <CustName>
        <CustAddr>
    <SubHeader>
        <SpecialDetails>
    <Orders> (Loop)
      <Order>
           <PO#>
           <Payer>
     <Item>
          <Item#>
    <ReceiverAddr>
         <Street>
         <City>

Answer 1

Hi Shanky,
Thank you for your help&reply and yes, i put statment in loop and "i" is loop counter. As you said, i also passed i as parameter in string-format.
If i use your script ( i already tried too) then i am getting xml from order records only. I am losing header records.
So i am getting :
<Orders> 
      <Order>
           <PO#>
           <Payer>
     <Item>
          <Item#>
    <ReceiverAddr>
         <Street>
         <City>
but i want to keep the same xml format but separate file for each order. So i want result similar to below:
<Request>
  <PO>
    <Header>
        <CustName>
        <CustAddr>
    <SubHeader>
        <SpecialDetails>
    <Orders> (single order)
      <Order>
           <PO#>
           <Payer>
     <Item>
          <Item#>
    <ReceiverAddr>
         <Street>
         <City>