I am trying to check usrLevel which would be the access level a user has to the site, in order to provide additional functionality to users with a certain access level. my app is supposed to switch which xml file is used for the user depending on this code which is stored in a session variable. the usersystem would be a prefix for the xml file to be used. This is not working as expected and I am not sure why. is the ! a modifier? 
f ($Session->{'usrSystem'} eq "MFR" && $Session->{'usrLevel'}=="!M")
      {
      $str .= "<leftIndex>";
      $str .= xmlFileData("Content/SSResources", $Session->{'usrSystem
+'}.ad.".xml", "mLeftIndex()");      
      $str .= xmlFileData("Content/SSResources", $Session->{'usrSystem
+'}.$Session->{'usrAccount'}.".xml", "mLeftIndex()");
      $str .= $logoutLink;
      $str .= "</leftIndex>";
      return $str;
      }
###Shows regular for everyone except this access level... ? 


    if ($Session->{'usrSystem'} eq "MFR" && !$Session->{'usrLevel'}=="
+!A")
   {
      $str .= "<leftIndex>";
      $str .= xmlFileData("Content/SSResources", $Session->{'usrSystem
+'}.".xml", "mLeftIndex()");      
      $str .= xmlFileData("Content/SSResources", $Session->{'usrSystem
+'}.$Session->{'usrAccount'}.".xml", "mLeftIndex()");
      $str .= $logoutLink;
      $str .= "</leftIndex>";
    }
    return $str;

  }

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In reply to regex question by grashoper

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