Here you are, try this. As indicated, Firebase won't accept "1" as a tag, so I have used leading zeros to make your numbers 001,002,003... - also make the alignment better, and sorts the tags alphabetically and numerically on Firebase, and when the data comes back to AI2. The data for each entry is stored as a list, using the reg Number as the tag (but also including the reg Number in the list). You will see a web component is needed for the json encoding blocks. I have set the four listviews to scroll together, and they will grow in size as you add entries.
NotesListviewsFirebase.aia (6.6 KB)