In the history (in pic below) of my custom object which has a reference to another custom object how can i access old and new values for the field which references another object.
Event__c is a reference to another custom object(has a master detail relationship) , but there are no new/old values in the history table- the value in New Value is just a reference to the parent ID.(Category__c is a drop down - cant see the values for this too).
How do i retrieve the values of OldValue and NewValue for this?
Event__c
) is a master-detail that doesn't allow reparenting, then there will never be an oldvalue for the relationship field as you can only create the relationship, never update it – cropredy Nov 11 '15 at 17:50