Hacky Easter 2017 Teaser , Riddle 15 Solution

RIDDLE 15

FRIDAY THE THIRTEENTH, 4:00 PM
/([FOR]*)([ID]{2})([^N]*)(.)(.*)/g
$2E$44

the second line is a regular expression, i tested the first line with it and it is ok

$2 and $44 capture parts of the check (good explanition is here http://stackoverflow.com/questions/5982824/what-does-1-2-etc-mean-in-regular-expressions)

i wrote the below javascript code to provide the $2 and $44

num="FRIDAY THE THIRTEENTH, 4:00 PM";
    re = /([FOR]*)([ID]{2})([^N]*)(.)(.*)/g;
    re.test(num);
    alert(num.replace(re, "$2,$44"));

this will alert ID,N4 adding to it the E

the code is "IDEN4"