How to change leverage and its mode on MECX?

How i can change leverages and set mode for futures on MECX with ccxt?

mexc_futures = ccxt.mexc({
    "apiKey": config.MEXC_API_KEY,
    "secret": config.MEXC_SECRET_KEY,
    "options": {'defaultType': 'swap' }
})
mexc_futures.set_leverage(10, "BTC/USDT")

Got

ccxt.base.errors.ArgumentsRequired: mexc setLeverage() requires a positionId parameter

[KindSpidey]

Now works Thanks

[KindSpidey]

`fetch Request: mexc POST https://contract.mexc.com/api/v1/private/position/change_leverage RequestHeaders: {‘ApiKey’: ‘mx0merTKMZUjmqMvm8’, ‘Request-Time’: ‘1652802870408’, ‘Content-Type’: ‘application/json’, ‘Signature’: ‘12de46df39d4b3e7b5f4dabf35a40a99a4c35e37e77d5e4b9bf7f1023f2a2623’, ‘User-Agent’: ‘python-requests/2.27.1’, ‘Accept-Encoding’: ‘gzip, deflate’, ‘Accept’: ‘/’, ‘Connection’: ‘keep-alive’} RequestBody: {“leverage”:10,“openType”:1,“symbol”:“ADA/USDT:USDT”,“positionType”:1}

fetch Response: mexc POST https://contract.mexc.com/api/v1/private/position/change_leverage 200 ResponseHeaders: {‘Content-Type’: ‘application/json’, ‘Content-Encoding’: ‘gzip’, ‘Content-Length’: ‘90’, ‘Expires’: ‘Tue, 17 May 2022 15:54:30 GMT’, ‘Cache-Control’: ‘max-age=0, no-cache, no-store’, ‘Pragma’: ‘no-cache’, ‘Date’: ‘Tue, 17 May 2022 15:54:30 GMT’, ‘Connection’: ‘keep-alive’, ‘Vary’: ‘Accept-Encoding’, ‘Server-Timing’: ‘cdn-cache; desc=MISS, edge; dur=116, origin; dur=12’} ResponseBody: {“success”:false,“code”:1001,“message”:“Contract does not exist!”} `

ccxt.base.errors.ExchangeError: mexc {"success":false,"code":1001,"message":"Contract does not exist!"}