I am not sure if I understand the question. Could you provide more detailed information on what exactly are you trying to achieve? The connections can be connected to the shapes only by the shape ids. If you wish to specify the connection start and end point then you can use the fromX, fromY, toX and toY fields
but the shapes will not be connected in this case.
Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI