You try to know the door of Author (and 100% of time he is already gone.no response) and 90% of time we even don't remember from where you have downloaded that indicator. If you have incorporated that indicator in your trading style and now you are stuck. ex4 version of indicator available and downloaded freely, once new MT4 built comes in, that old. Only thing I wish to highlight is, if you have some. With all respect to all arguments, its simpler said not to decompile and moral and ethics and all the wonderful words.
