NAV 2017 Action Events - CurrPage.UPDATE

Hi all,

I'm currently creating an Extension/App (upgrading an older solution). I added some page actions and created a Codeunit to handle the action events (OnBeforeActionEvent).
Is it possible to update the action calling page like it is in the action trigger of the page itself (-> CurrPage.UPDATE)? If not, maybe there is a work-around you know about?!

Thanks in advance.