How can i check if a rule was applied to a download?

Hey all,

we bought the plugin “Advanced Access Rules” for “Download Monitor”. So we want to customize a bit.

So I added this line of code:

add_filter( 'dlm_can_download', 'check_if_can', 1, 2 );

But the function “check_if_can” is always triggert, even when there are no rules for the download.

I want that this is only triggert if there is a rule set for that download.

Any ideas?

THX & Cheers