I can't get ios simulator to simulate swipe action.

I am really new to xcode. I am attempting to create a test app that will allow me to use the swipe function to swipe right and left between two images. I have found loads of video tutorials on how to do this in storyboard, which I've followed, and the tutorials create exactly what I want to do. However when I replicate the process, it just doesn't do anything when i come to run it in the ios simulator.

I am working with all updated versions, on a Macbook Pro, and have tried creating the app for both iPhone and iPad. Other functions created in storyboard run fine in the simulator.

Any advice would be massively gratefully received!