Hi Ignacio!
Thanks for your reply. Effectively in that file is the function.
And what I try to do is that after filling the page with content, be it text, video, audio, etc., using a button can display a panel with a summary of the information that has been entered, just as some installers do , which show a summary after having chosen certain options.
That is, I want to show a panel with a summary of what was done in the page, that summary I want to do per page, that is why I need to implement an event for the button where I can call a panel to show that information. Additionally, I need to take the information that I enter in each page to present the summary, for example the text entered in a text area.