Hi, many thanks for your suggestion, however it still doesn't work. I know it must be difficult to help given you haven't seen the code, if there is any way in which I could send then please do tell me. Below is the link to the test flight for my app. If you have some time to look at the app, it would be greatly appreciated as then you would be able to clearly see the issue I am having with the 'continue to app' button. https://testflight.apple.com/join/ytQNTYHU Many thanks for all your help.

Hi, I have a test flight link, which I have attached below. If you had some time, I thought it would be easier for you to actually see the problem when the 'Continue to App' button is pressed as I am unable to attach screenshots of my code on here. https://testflight.apple.com/join/ytQNTYHU Many thanks for all your help.

Hi, is there any way in which I could send you the code instead of just being limited to the 7,000 characters from a reply in the forum? Many thanks for your help.

Hi, the function isn't called because it should occur as a result of the action of changing the item in the pop up button. As for the type it is, I have dragged into my storyboard a 'Pop Up Button' which I believe takes the name of a UIContorol but please do correct me if I am wrong. Many thanks again for all your help, it is very much appreciated.

Hi, I replaced the code adding in 'CorrectType' to the function call however, CorrectType is not defined. The error message states "Cannot find type 'CorrectType' in scope." How and where do I define it? Many thanks for your help.

Thank you very much for your help. The button now opens up the storyboard as I wished. However, the storyboard is only opening up within my Navigation stack which is not what I want. I need the navigation stack to close before taking the user to storyboardview, otherwise I just end up with a view inside a view. Any thoughts on this would be great. Many thanks for your help.

The error is on this line: guard let selectedItem = sender.selectedItem else {  return  }.

Hi, thanks for your help. I have now attached my ViewController below. The problem I have is that when you are on the camera tab of my app (defined in ContentView100), the buttons which are defined in my ViewController appear however are not intractable. Therefore clicking the take picture button does not open up the camera as expected. Many thanks Olivier