Unfortunately bindings cannot be dynamic so they cannot be changed on the fly. What yo can do however is use a relative reference for your binding in the fragment then when you import the fragment in your main form you can point the parent subform of the fragment to the right parent node in the schema. This woudl allow you to reuse the binding of the fragment in different areas of the schema as long as the structure was similar in
those sections of the schema.
Make sense?
Paul