Kestal's ability reads:
"While you perform an attack, after the defender rolls defense dice, you may spend 1 focus token to cancel all of the defender's blank / focus results."
Juke reads:
"While you perform an attack, if you are evading, you may change 1 of the defender's Evade results to a Focus result."
My question is can I use Juke to change an evade to a focus, and then trigger Kestal's ability to cancel that focus? To be it boils down to Kestal's timing. Does it have to be immediately after the defender rolls dice and before modifications? Does it have to be in the modification step and thus I can choose which triggers first? Or does it have to be during the attack but just some time after the roll, in which case I could even wait until post-mod step?
Thanks.