Build me a trading robot -- 2

I want to make EA from a BUY/SELL indicator.

CONDITIONS

1. BUY / SELL ORDERS are based on arrow indicator.

2. Option to set margin %

3. ALL LOTSIZES WILL BE BASED ON THE SET MARGIN %

4. Option to set starting lot.

5. AS MARGIN % INCREASES, LOTSIZE DECREASES .

✍️ CONDITIONS FOR BUY

BUY when indicator buy arrow appears.

When indicator buy arrow appears, EA begins to buy.

✍️ CONDITION FOR SELL

Sell when indicator sell arrow appears .

When indicator sell arrow appears, ea begins to sell begins to Sell.

✍️ ADDITIONAL CONDITIONS

Options for existing trade:

Close trades when opposite signals appears.

OPTIONS for SL and TP usage.
OPTIONS for trailing stops

? Trade example :

If you set margin at 200% then EA will enter trades automatically once a buy or sell arrow appears starting lot size from the set value ( highest ) once margin level is 200% or above so that all of your profits are used up in entering new trades in the same direction that original trade is in .

So it keeps opening more position based on the profit from the margin .