You could always toss it into a while loop.

while (!defined $report)
{
   $count=$count+1
   if ($count == 1)
   {
      "7.) What do you want to name the report:",
      textfield('report'),
   }
   else
   {
      "7.) You MUST Supply report Name:",
      textfield('report'),
   }
}
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Just a thought, obviously the if/else would have to do the other things you are attempting.

"Nothing is sure but death and taxes" I say combine the two and its death to all taxes!