@maledetu I have not worked with orders in a grid but, I assume if you change the percentage to lets say 200% then it would work like this, 0.1, 0.2, 0.4, 0.8. You can do what your saying for a single trade, under buy/sell add 0.1 to variable, at a set point reset to 0.1, not sure how this would work in a grid.
You could use something like pips away to place via a variable, every trade save the used lot, then add and use for next.