You can’t set multiple stops automatically.

You will have to deal with each one yourself. Besides, you can’t use pending STOP/LIMIT orders to partially close positions.

You will have to check when each candle closes if a price level has been hit, then exit AT MARKET:

MyLongConditions = Not OnMarket AND Close CROSSES OVER average[100,0](close)
IF MyLongConditions THEN
   BUY 3 Contracts at Market  //assu,e the entry price is 1000
   Stop1 = close - 350*PipSize
   Stop2 = close - 250*PipSize
   Stop3 = close - 150*PipSize
   Flag  = 0
   SET TARGET PRICE close + 900*PipSize
ENDIF
IF close <= Stop1 THEN    //close all positions at this level
   SELL AT MARKET
ELSIF close <= Stop2 AND OnMarket AND Flag = 0 THEN //close 1 position
   SELL 1 Contract AT MARKET
Flag = 1
ELSIF close <= Stop3 AND OnMarket AND Flag = 1 THEN //close 1 position
   SELL 1 Contract AT MARKET
Flag = 2
ENDIF
graphonprice TradePrice
graphonprice Stop1 coloured("Gold")
graphonprice Stop2 coloured("Fuchsia")
graphonprice Stop3 coloured("Red")

Tested on DAX, 1-hour TF.

The max drawdown in Backtest is scary !!

Albaran wrote:

that partial closure was possible – with the new feature of multiple stops and targets from V12!

Yes with manual orders.