help adding a hidden S/L at the most recent H/L for this closing EA?

I'm really hoping that someone might be able to add a stop loss feature that preferably is hidden from the broker... that sets it automatically at the most recent swing high or low and closes the trade at that level. Obviously the code for closing the trade at the opposite TMA line is already written. I don't need a trails or a breakeven feature at all to trade the way I want to trade. I would appreciate it greatly. This site has been really encouraging and giving and I hope someone can help me out one more time.