jelly if statement headache

[Dan Tran]

Hi I have 2 jelly variables that i want to compare in jelly if stament

   <j:if test = "${ var1 == var2 } >
     <!-- do some thing-->
  </j:if >

it is not working for me.  is it the right syntax?

and I also search on lots plugin.jelly sources to find some similarity, none shows up 
so far

Help is greatly appreciated.

-Dan