Displaying data to dynamic pages

Thanks you ! That’s working !

One more thing, how can I actually make the text coming directly in the page ?
Cause I created a text, that I change :

The problem is that when I go on my page, there is first write “heading 3” then my code run and I got “Hello …”

I want my code to run directly without seeing “heading 3”, is there a way to do it ?