I can give you a hint and if you use your brains you will be able to hack
First of all you will need a skill-list.
After that you need to know that a skill has 2 names. One that is being used in the game and the other one you can find in the skill-list. I will give you a sample. 1st name : Thunder Storm 2nd name of Thunder Storm is : mage-42 ( this is the "key")
Now if you search in the debugger, you just fill in "mage-42" and you will find the list where the compare's are listed. To find the 4 digits to cooldown you need to change the last searching digits. Sample : from 0145ABDS ----> 0145ABDT ( i changed S in a T)
After you pressed search you will find the 4 digits.
I hope i was clear enough. Sorry for my not perfect english
Enjoy