I need just to add a new Stop to my existing EA

I need to add a stop to my Existing EA (open script of my EA will be included) as follows:

I need for every trade the stop should be 2 pips higher or lower than the last 4 bars including the wicks.

meaning:

for a LONG trade, the stop should be at 2 pips BELOW the lowest low of the last 4 bars

for a SHORT trade, the stop should be at 2 pips ABOVE the highest high of the last 4 bars

With a maximum of 15 pips (or to whatever stop is chosen in the current stop settings) 

I need someone that has the time now !