Method to update the MoreAttributesExist value by comparing the number of attributes in the group with the number that can be shown.
Namespace: Programmer.Editor.Fixtures
Void CheckMoreAttributes(Int32, Int32)
http://[ip]:4430/titan/script/Programmer/Editor/Fixtures/CheckMoreAttributes
attributes: The number of attributes in the selected group.
attributesCanBeShown: The attributes that can be shown.