Mantis CSV Importer 1.4.0 Help?

[HelloWorld]

Hello,
I am sorting/controlling my bugs using a custom field names Issue ID. Is there anyway I can create a pop-up that will display when I create an existing Issue ID? The pop- up can say something like "This bug already exists. Do you want to update it?" If Yes, then continue updating. If no, then display an error message.

In github there is mantisbt-plugins/csv-import/import_issues.php

There is different cases to get date from the CSV file.
So I could add a case 'issue id':
$v = get_column_value( $aColumn, $t_file_row, '');
But how do I compare it to other Issue ID and create a pop-up?
Thank you

[SL-Gundam]

This section of the forum concerns the EmailReporting plugin. You would be better off asking your question here: viewforum.php?f=3