#start table template
my $sTemplate='<table><tmpl_var form-start>...<tr>...</tr>';

#generate table rows
foreach my $iRow (0... $#loopData) {

   #generate field definitions qualified by row id
   #  e.g. FNAME_$iRow
   #       LNAME $iRow
   #       CHECKBOX $iRow

   # append field definitions to row fields
   push @aFields, @aRowFields;

   # generate a template string using the above fieldnames
    $sTemplate .= "<tr>...<tmpl-var field-checkbox_$iRowId>...</tr>";
}

#finish table
$sTemplate='<tmpl_var form-end>INSERT_NEW_RECORD_HERE</table>';

#write template string out to a temp file
#generate form using the temp file
my $oForm = CGI::FormBuilder->new(
   fields   => \@aFields, 
   ...
   template => 'tmpForm.tmpl'
);
$oForm->render();