Hi,
I'm on Binance.

I want to do the following:

Precondition:
0 USDT in account
1 limit sell order set at 40000 BTCUSDT

What to do:
if (BTC price < 40000 USDT)
{
  set_limit_order("buy", amount)
}

I would like to do that via Binance or by other means like Pine script or other.
I need to know if it's possible and to have some guidance.

Many thanks!

PS: because most of my topics get 70% offtopic messages, I ticked self-moderated option for this one.