Convert custom indicator to EA (expert advisor) - Metatrader 5 -- 2

Hello there, I have a custom indicator that gives sell and buy alerts. I want to convert it to EA that convert these alerts into orders as follows: 1) The maximum opened orders at the same time is always only one trade for each paper that the EA works. 2) I have to be able to set a default lot size to the orders. 3) I have to be able to set money management as i wish, as so the stop loss and take profit in points. 4) The EA will work in future markets and will work with points, not prices. Each 5 points equals 1 unit of money. Note : When the EA is launched it must check if there is order opened or not, to make sure not to open more than one order at the same direction. ## what I need is to convert the code itself from an indicator code to EA code ( the use of icustom function is not allowed ) ## You can contact me if any further information is needed.