Try "For each Trade -> check age -> modify stops". Also "once per trade/order" can be put to prevent multiple modifications. The thing here is that "check age" works with the age of the trade and it doesn't care about candles, but I think this should be ok. Well, if you want to modify stops on the new candle exactly, then put "Once per bar" above and with "check age" you can check the opposite - whether the trade is younger than whatever minutes.