Thank you, Jeff,
I did see the link you kindly referenced and I did try to create the add-in using the Silverlight template to edit the behaviour. However, this thread is very old and the libraries/methods that are referenced are no longer available, or at least I was not able to get to. Here is an example:
ESRI.ArcGIS.Mapping.Core.LayerExtensions.SetIdentifyLayerIds(agsDynamicLayer as Layer, visibleLayers);
With a bit of digging, i did find the ESRI.ArcGIS.Mapping.Core.dll. I did see one in the Builder web application, and I did try to reference the library (physically copying it) but unfortunately, it did not work for me. Unless I am reading it wrong,I think the referenced method is deprecated and this is when I decided to post my issue..
Thank you again for at least trying to help. I do appreciate it.
Nader.