Since you are no longer sending the GrabObj object, you can't receive it in the update function. You could try getting a handle to the transport in your script using the following:
Code:
transport = vizconnect.getTransport().getRaw()
Then set its position and orientation to the values you receive in the update function.
I can't guarantee that this will help or not. As I mentioned before, to get help with code on the forum it needs to follow the guidelines for posting code. For more in depth assistance, you might contact
sales@worldviz.com and they can provide options for custom development and priority support.