This question partly builds on the "communication between framework and module" question asked by someone else. I'd like to create a module that could provide some visual feedback to the user. Suppose for example that I'd like to have a text box that has its value updated every block based on something my algorithm computes. This is important for applications such as parameter tuning.
1. I know that we can use external symbols; this doesn't allow me to create one such sample per algorithm instance (growth).
2. More importantly, even if I were to figure out a way to access such data, can I update a text field (or any GUI component for that matter) based on this value? If so, a very simple example would be fantastic to look at.