I set a take profit of 1.3%, why the robot sells not 1.3%?

I set a take profit of 1.3%, why the robot sells not 1.3%

ANS: When the market reaches 1.3%, the robot will start tracking and take profit, continue tracking, and sell when the market pulls back, and the profit after the sale needs to deduct the exchange fee, so it is normally between 0.6% and 0.8% , The market may rise more and the market decline may decrease, but it will not sell at a loss.