Easy, go download and install autohotkey on their website.
Then download this archive :
Extract the text files inside, the 2 .ahk files. common.ahk isn't a script it's a list of shortcuts methods I use in the main script. You don't launch this one, but it have to be here in the same folder of the said good script "Akuma...ahk".
Edit this script "Akuma_F.throw..." with a text editor, and read it.
Exit a script is done by closing this green icon in tray bar.
If you edit the script you need to relaunch it.
How it works : the script will listen to you stick button to start a sequence. I programmed the L2 button (the last button on a stick layout after the HK), an unused button very handy so I can keep pushing button in training without launching the script if I don't want to. So just grab the dummy with this L2 button in your inputs (lp-lk-l2), and if the timing are good in the script, the dummy will do a reversal of your choice. If you don't push L2 in your grab you will test your meaty on a neutral wakeup, very handy no ?