Needs a simple EA that opens 2 positions 1 buy and 1 sell at same time.
is position goes up x distance it should close the buy position at profit and open another buy and sell position. (so TP is same as distance and no SL)
if position goes down afterwards it should close the second sell position and only open 1 buy (sell is already at same position)
so at all times you have 1 buy and 1 sell open at same lvl no more