Using this filter you can modify the package settings before serving download.
<?php add_filter('wpdm_before_download','callbabck_function',10,1); ?>
<?php add_filter('wpdm_before_download','wpdm_before_download_package',10,1); function wpdm_before_download_package($package) { //todo: Modify any package settings. This changes made here are only for current requested download if you do not update the option. return $package; } ?>
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