A simpler example for that custom trigger request:
1) Create the custom trigger and head to the events page, then add an event. (
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2) Using
this resource, find the appropriate event. In this case it's 'ACTIONBAR_PAGE_CHANGED', so enter that name into the event name box and press enter. (
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3) Leave the Automatic mode checked, we don't need custom handling.
4) Head to the Trigger page and you'll see this lovely block of code. (
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5) Replace it with this. The idea is it'll activate if our current page is #4. (
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6) Add a display with that particular trigger. (
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7) Test!
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