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Before and After COUNT of related records

:smileywink:Well, it actually depends :smileywink:

Hey where is ALL the text that I typed in my post GONE :( ... why is it displaying my post as EMPTY :( ...



Ahh let me explain my issue again then:


Consider this:


I want to put a Check in my trigger on Event object such that I could detect and throw an error to User that Attendee removal is not allowed here. I want to Count the Attendees in Event Before, and the Number of Attendees at present, But SURET before because I do not want to Save the Event. That is the main issue. 


I want to detect the Attendee Number change in an event BEFORE event is Saved. How can I do this?