give me some suggestion on auto exit trade.

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why orderselect cannot auto close trade ???
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OrderClose(BuyTicket, LotSize, Ask, Slippage, CLR_NONE);
why cannot close the trade ???
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            if(SellTicket > 0)
            {
            OrderSelect(SellTicket, SELECT_BY_TICKET);
            
            OrderClose(SellTicket, LotSize, Bid, Slippage, CLR_NONE);
            }
 
albert_lim83:  was given a CloseOrder() routine  and repeatedly told to check his return codes, and here he is posting a snippet again.
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WHRoeder:
albert_lim83:  was given a CloseOrder() routine  and repeatedly told to check his return codes, and here he is posting a snippet again.

hahahahaha.....
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hahahahahahaha....
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how to orderclose for flexible lotsize ??