I know it is possible to place Back bet and then Lay bet at half the odds( like for Dobbing). Now I'm trying to LAY(at 2,5 for example) and then Back for 1,2 just in case to minimaize loss) but what ever I do in the strategy and it won't place that Back bet. I also checked log and there is nothing in it about Hedge.
I didn't test your strategy, but at the moment I think you have the hedge bet placed immediately after the first bet Is matched. In the bet 2 (hedge bet) you have set as condition "dbo.fn_BetProperty (@id_trade, 1, 'status') = 4" that means "when the bet 1 is full matched", and it is correct. But you miss another condition: the price should drop under a certain level to hedge in loss: "dbo.fn_BetProperty (@id_trade, 1, 'status') = 4 AND @best_back_price <= 1.33"
And there is another thing: in bet 1 you have set "Close Trade" when matched. A trade when is closed cannot receive more bets. So you have to remove that option for bet 1 and leave the same option ON for bet 2 as it is.