Sorry to ask but are there any "simple" zigzag?
I mean all zigzag inicators for MT are made with the same code or the same with slighty variations, there is no really difference between the code of one version called X and the other called Z, just make up.
My opinion excludes FX_SNIPER2 piece of excellent work.
New version (202) of MT comes with an improved code but is almost the same.
I´m using the old Tradestation zigzag which have only one input "percent wave". So you decide what you want, reversal of 5%, 2% 14&, completely easy. Without ExtDepth, ExtDeviation, ExtBackstep
BTW, I appreciate if somebody can explain what are these inputs and how they work

. There is no manual, there is nothing.
Here is a
good link about ZZ.