Hello dear experts,
in the application I am building with Apex 5.1 some users have the possibility to order services and they want to see, how many entries they have in their shopping cart or trolley. I have a navigation bar with the user name in it and I want to complement it with an item, that displays the number of entries this person currently has in his trolley. I think, that I need to create an application item to store this value and then to create some processes or dynamic actions, but those things have not worked for me yet
The navigation bar looks like:

Thank you very much for your input
Hans van Baal