I agree 100% with Provenzano. Based on experience with building a zig zag robot as well as advice from I'andorra when I asked him to help me in the past, I recommend that you do use it as a method to determine levels of support and resistance, but not as a stand alone robot. You will LOSE your money, trust me.
Rather use it as confluence with other indicators or market structure analysis to determine where to buy or sell. It works way better that way especially in consolidating markets.