If subsystem output is not the same as expected

Good evening, i am doing a model of a distance relay via simulink and in that matter i need to use many subsytem to devide the work and operation and some of these subsystem has to work only when a certain condition is true so i used an if and if subsytem and when i tried to make the subsystem of the if subsystem the same as my subsystems in the model when i run the model the ouputs are not the same and i need them to be the same as most of the design is relying on that concept so can anyone please guide on what to do ? here are two images of the ouputs one from the normal subsystem and other from if subsystem

[Mohamad Nazir]

Hi, have you checked if your if conditions are accurate? Could it be that the subsystem is activated more than the if subsystem? It is hard to evaluate what may be going wrong without the model, but you can try to use an enabled subsystem instead of an if subsystem. https://www.mathworks.com/help/simulink/ug/enabled-subsystems.html

Hope that helps

[Fangjun Jiang]

@Asmaa Hassanein, please use punctuation.