title: Difference Between 2 variables lists TIBCO BW
body: <p>I have 2 variables.
  I need to get the difference between them.
  $var (a,b,c,d) and $var2 (a,b,c,d,e,f,g).
  How can i do this using xpath funtions?
  Any help is appreciated.</p>
  
  <p>Thanks in Advance</p>