I've followed the guide above to add a filter to the sidebar of the backend list view. I was successful in adding one filter (ex: Filter1), but when adding a second filter (Filter2):
1. Clicking on Filter1 applies Filter2
2. Filter2 is unclickable.
Both Filter1 and FIlter2 has the same command name, button type, and type. They have different command argument, name, and commandtext. What could be the problem here?