How trailing target works
Based on my understanding, you buy a script at 20 and set the trailing target at 30. Once the price goes over 30 and triggers, you wait for any further increases, like 35 or 40, and trail the target according to your set steps. Once the price starts to decrease, it will exit at the best price.
@Dhan @RahulDeshpande describe in better way and details
lets take an example of an order entered at 100 with target 110 and a target trailing jump as 1, in this scenario at every one point increase in your direction after reaching set target 110, this 110 will be set as a base price for further trailing, which means, if price rised further example lets say till 115 base target will also be moved upwards and will be excecuted at a one point drop from high. So if the price falls to 114 after making a high of 115, it will be executed.
Thank you so much