title: ZPL: RFID, Combining Field Data (^FD) and Field Numbers (^FN)
body: <p>I am attempting to encode the EPC of a GS1 RFID using ZPL statements on a Zebra 410R printer.  </p>
  
  <p>First, consider the following ZPL : </p>
  
  <pre><code>^FD51,0,6,111111,2,33,444^FS
  </code></pre>
  
  <p>What I am attempting to do, is replace the 444 with a value stored in a field number (^FN).</p>
  
  <pre><code>^XA 
  ^DFE:RFID^FS
  ^RB96,8,3,3,20,24,10,28
  ^RFW,E
  ^FD51,0,6,111111,2,33,^FN11"Enter Barcode"^FS
  ^XZ
  </code></pre>
  
  <p>So, How do I replace the '444' portion of the field data with the value stored in the field number (^FN11) ?</p>
  
  <p>Thank you in advance.</p>