Modification for Forexmts

I would like a trade management enhancement completed.   A trade recovery mode similar to a martingale type of strategy.    Create an extern (Trade Recovery) that has an input of the multiplied lot size following a loss.  

Logic:

If previous trade was a loss then multiply the lot size by n amount  (e.g. 1.5 )

Trade 1  -  normal lot size  Win

Trade 2 -   normal lot size (Loss)

Trade 3 -  multiply by 1.5  for lot size

Trade 4  -  if trade 3 was loss multiply trade 3 lot size by 1.5

                if trade 3 was win then revert to normal lot size