Limit number of page references?

[dragan]

Is it somehow possible to limit the number of pages one can select with the page reference field?

I have a case where I need to have exactly three, not more, not less. Is this doable with a hook? Or would you suggest another approach? (three single pageref fields and make each mandatory)

[wbmnfktr]

Maybe this is a good starting point:

 

[dragan]

Thanks! Looks great. Funny thing is, I have AoS installed, but overlooked that feature.

[wbmnfktr]

Hope it works as expected.