Problem with Binance Future API how to set margin

Hi everyone!

I would like describe my scenario:

I open position ETHUSDT with leverage 2x on binance future with 100$ my margin is 100$

I open position ETHUSDT with leverage 2x on binance using API with 100$ my margin is 50$

How to set my Margin on binance api to 100$ ?

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My url:

https://fapi.binance.com/fapi/v1/order?symbol=ETHUSDT&side=BUY&positionSide=LONG&type=LIMIT&quantity=0.3&price=4000&timeInForce=GTC