I have a few questions for you:
Anyway, I really appreciate your help.
You are likely better off forgetting the Editor widget (It just combines the out-of-the-box TemplatePicker, AttachmentEditor, AttributeInspector and GeometryService to provide feature and attribute editing.) but because you need multipoint ability you are better off using the Edit toolbar and AttributeInspector.
Here is a sample you have likely seen for adding multipoint.
Editing multipoint is not anything I have a sample for or experience with.
Thanks again for your help and advice. I was afraid that was going to be the case. I'll try to find a way to edit multipoints. I'll report back once I have a working solution or if I have any other questions.
Thanks so much for your prompt reply.
This is the code that I'm working with. I just use the startup method of the editor.
Have you checked the method "setPoint" in multipoint class. You can update a point from multipoint created using this method.
Here is the web help link: