Enabling Simlink on Xbox for Moving Maps on External Devices - FSR 500

Dear support team.
I have problems to activate the SimLink Broadcast Position transmission on the Navigraph Settings page in the G1000 NXi of FSR 500.
I have done all the steps as described in the Navigraph blog "FSR500 with Navigraph Avionics Plugin and EFB Integration - Enabling SimLink on Xbox for Moving Maps on External Devices" 
I have attached a screenshot of this page.
The problem is, that there is no change on any value on this page, using the outer FMS knob.
What I am doing wrong? How can the SimLink Broadcast Position set to on?
Thank you for your help.