Anyone have/can make a basic fixed trailing stop EA for MT4?

I am looking for a simple fixed trailing stop EA for the MT4 platform. I DO NOT want all the confusing bells & whistles that I have found in this forum for trailing stop EAs (I've done a forum search and found some confusing settings of various trailing stop EAs). I just want a very simple fixed trailing stop for the MT4. For example, if I enter a market order and I then set the trailing stop loss for 20 pips, then I only want the stop to move up when my trade makes a 20 pip movement (in my trade direction of course). And obviously by the nature of a fixed trailing stop, I only want the stop to continue to move up every time there is a 20 pip movement in my favor.

Does anyone know of such an EA? Or can anyone make one?