I finded a Pine Script indicator that I would like converted into a MQL4 indicator.  I need add alett when the price breack of one line  (down or UP)  and add arrow. 

The code must be bug-free and well documented/commented to allow for future debugging and expansion/modification (I may want to eventually turn this into an EA)

The trading signals should exactly match those triggered by the pine script indicator

The available user/front end settings should match the pine script indicator

, so the MT4 indicator should do the same (or similar)