Is OCO order supported?

[MrGood410]

I'm trying to submit the LIMIT OCO order without any success.

I'm using the following code and only get half of the order through, without the OCO part.

 if position.amount > 0:
       LimitPrice = position.base_price + 150.0
       StopPrice = position.base_price - 150.0
   else:
       LimitPrice = position.base_price - 150.0
       StopPrice = position.base_price + 150.0
   await bfx.wss.inputs.submit_order(
       type="LIMIT", symbol=position.symbol, 
       amount=-position.amount, price=LimitPrice,
       lev=position.leverage, price_oco_stop=StopPrice)

Any idea? Is there a Python example using the OCO order?