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## Stop Loss & Take Profit keep on changing value

 3 wayneb 2014.10.08 22:16   hi everybody..I'm working on a simple EA,. I realized that my SL & TP keep on changing after testing it on demo..Initially, I set input parameters, SL =10 pips, TP = 10 pips..but it keep on changing and appear on a trade SL =9 pips, TP = 11 pips/ SL =8 pips, TP = 12 pips/ SL =11 pips, TP = 9 pips/ SL =12 pips, TP = 9 pips,... please, can someone explain to me why is this happening,..and kindly solve my problem,.thanks
 Moderator3504 GumRai 2014.10.09 00:16 #   Slippage
 Moderator3206 angevoyageur 2014.10.09 00:26 #   GumRai: SlippageThere is no slippage on demo account.
 Moderator3206 angevoyageur 2014.10.09 00:33 #   wayneb: hi everybody..I'm working on a simple EA,. I realized that my SL & TP keep on changing after testing it on demo..Initially, I set input parameters, SL =10 pips, TP = 10 pips..but it keep on changing and appear on a trade SL =9 pips, TP = 11 pips/ SL =8 pips, TP = 12 pips/ SL =11 pips, TP = 9 pips/ SL =12 pips, TP = 9 pips,... please, can someone explain to me why is this happening,..and kindly solve my problem,.thanksHow do you calculate these values 9-11/8-12/11-9, etc... Can you show your trades history ?
 Moderator3504 GumRai 2014.10.09 02:56 #   angevoyageur: There is no slippage on demo account.Are you sure about that?The OP does not use RefreshRates() in the code and it is quite possible that the loops could take some time to execute, therefore missing ticks.So, on demo, a trade will be placed at the Ask price loaded when start() is called, no matter whether ticks have been missed or not?
 3 wayneb 2014.10.09 08:03 #   angevoyageur: How do you calculate these values 9-11/8-12/11-9, etc... Can you show your trades history ?yes sure..
 3 wayneb 2014.10.09 09:17 #   GumRai: Are you sure about that?The OP does not use RefreshRates() in the code and it is quite possible that the loops could take some time to execute, therefore missing ticks.So, on demo, a trade will be placed at the Ask price loaded when start() is called, no matter whether ticks have been missed or not?  Do you propose reducing slippage or no slippage at all?
 Moderator3206 angevoyageur 2014.10.09 10:46 #   wayneb: yes sure..?
 Moderator3206 angevoyageur 2014.10.09 11:19 #   GumRai: Are you sure about that?The OP does not use RefreshRates() in the code and it is quite possible that the loops could take some time to execute, therefore missing ticks.So, on demo, a trade will be placed at the Ask price loaded when start() is called, no matter whether ticks have been missed or not? Yes I am sure.Even if the loops take too much time (which is possible here if trades history if very large), and your price doesn't correspond to actual price, you will get an Invalid price error(129).