Struts 2 - Setting and Incrementing integers in jsps

[Mark Brownengland]

I'm trying to create an int/Integer variable in my jsp using s:set. I then perform a check using a s:if making use of the integer variable I just created. Finally, I would like to increment this jsp set integer variable for each iteration in my s:iterator dependent upon satisfying a particular condition i.e. index % 6.

I would appreciate an example of how I could achieve this using these struts 2 tags.

Thanks in advance.