PHP Kiteconnect API : How can we place Bracket Order via API?

Algos, strategies, code
1

I am using following code to form Bracket Order:

$order_id = $kite->orderPlace([
“tradingsymbol” => “SBIN”,
“exchange” => “NSE”,
“quantity” => 1,
“transaction_type” => “BUY”,
“order_type” => “LIMIT”,
“product” => “BO”,
“price” => “254.40”,
“squareoff_value” => “0.30”,
“stoploss_value” =>“0.30”,
“validity” => “DAY”,
“variety” => “BO”
], “regular”);

Throws following error:

Uncaught OrderException (400) 'Invalid product for that order variety.

Please tell how can we place Bracket Order?