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  • Hi,

    Thank you for your interest in our plugin. Adding regular expression will require some code editing.

    There are two way to go about it:

    1. In view-form.php add regualar expression in function validete_userName()
    line number near by 665

    OR

    2 Use php for regular expression in crf_ajaxCalls.php in function validateUser line number 13

    Let me know if you have any other questions. Cheers!

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