770
770
my $oldVal = ReadValue($dataPt,$pos+22,$format,1,$size);
771
771
my $nvHash = $et->GetNewValueHash($tagInfo);
772
772
if ($et->IsOverwriting($nvHash, $oldVal)) {
774
774
$newVal = WriteValue($val, $$tagInfo{Writable}) if defined $val;
775
775
if (defined $newVal and length $newVal) {