title: Mirth Changing Default ACK Field Value
body: <p>I am using Mirth with a LLP listener receiving HL7v2 message.</p>
  
  <p>The customer expects an ACK message from us and so we checked the "Send ACK" radio button. The only problem is that in the default ACK it puts MIRTH in the MSH-3.1 field. I need to change this to another value to say where it came from.</p>
  
  <p>Is this possible?</p>