Could you please help me understand why trailingStopLoss is not working in the below ROBO order?

I am placing a BO (Bracket Order) with variety = "ROBO" and producttype = "BO" using a normal BUY ROBO order (not STOPLOSS_LIMIT).

Even though I am passing trailingStopLoss: "5", the trailing stop loss does not seem to get applied.

Here is my order payload:

orderparams = {
    "variety": "ROBO",
    "tradingsymbol": symbol,
    "symboltoken": str(token),
    "transactiontype": "BUY",
    "exchange": EXCHANGE,
    "ordertype": "LIMIT",
    "producttype": "BO",
    "duration": "DAY",
    "price": str(entry_price),
    "squareoff": "10",
    "stoploss": "2",
    "trailingStopLoss": "5",
    "quantity": str(qty),
}

Could you please confirm:

1. Is trailingStopLoss supported for ROBO BO orders in SmartAPI?
2. Is the correct parameter name trailingStopLoss or should it be something else like trailing_stoploss?
3. Are there any restrictions or minimum values required for trailing stop loss in ROBO orders?

Thank you.