Sometimes we remember about inline functions and runtime and use them on different parts of the design of our Nintex Forms, but we don't get the expected result by us, and sometimes it's simply because we haven't considered when they are executed.
The difference is that Inline functions are run when the form is loaded., although the Runtime Functions will run while you have the form open, changing a control 's value, so filling a text field will cause the Runtime function to evaluate again.
This is a simple reminder for me and you.