Need help with part of an ea built with fxdreema

I have an existing ea that is quite complicated and need help with just one small part.  My ea is based off the macd line and enters into buys when the macd crosses above a certain macd value.  I then want the trade to close based off a trailing stop using the macd value only.  Nothing to do with the price of the asset.  So for instance if the macd crosses above -.005 and the reaches .002 it will begin at trailing stop just off the macd.  If the macd now drops to .001 the trade will close.  If the macd continues to climb the trade will continue until the macd pulls back a certain amount.  The rest of my ea works fine, its just not closing correctly as the guy who coded it couldn't get the macd trailing stop quite right.  I need this coded in fxdreema so I can integrate it into my existing ea.  Parameters I need coded to see that it works:  1.  Value for macd to cross above.  2.  Value to reach before triggering trailing stop.  3.  amount macd must pullback to close.  4.  stop loss   5.  lot size.  attached is a screenshot that hopefully clarifies this