Next value with in the same iteration but in a new loop

I have a loop in my action transaction (see below).  I want to run that user 5 times before logout.  Then logout and start over again.   I want that user to use a new value every time.  I set my parm file to change after each iteration.  When I execute the test the data is the same during the loop of 5.  Loadrunner sees the loop as 1 iteration.  How can I force the new data within the loop?

 int x;
Action()
{

Select_URL();
 Login();

 for(x=0;x<5;x++)
 {

  ID_Search();

  Addr_search();

  ConfirmInfo();

 }

 Logoff();
 
 return 0;
}

Regards,

Boatnlarry