Changing Confirmation Message when Delete Button clicked on List

Dear everyone,

Do you have any idea onhow to change Confirmation Message when Delete Button clicked on List Page?

For example: I woould like to write "Be carefull!.. This operation can not be undone."

I would like to change it on some Tables, not globally.

I tried Before record deleted event on List Page but it didn't help.
MVCFunctions.EchoToOutput("Your message here");

I also tried Javascript on Load event on List Page:
$( "#delete_selected1" ).on( "click", function() {
alert("my message");
});

Any help will be very appreciated.

I use ASPRunner.net 10.6 Build 37620 x64

Thanks a lot.
ccvvcc