That sounds relatively easy once you have the original indicator. A good coder should have no problem. Not sure that my coding is up to that but may be tempted to look later.
Ignored
What you are describing makes sense. An indicator that measures not only the current strength of currencies but also how quickly they are gaining or losing strength could help identify suitable trading pairs earlier. Technically, this could be implemented by transferring MetaTrader data to Excel or by developing a custom indicator.