rosbridge example, no output

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Installed rosbridge_suite for indigo distro. Testing link text in rosbridge tutorials by changing the following for my robot:

28. topic: '/Pioneer3AT/rqt/cmd_vel

I run the following:

roslaunch pioneer3at power_pioneer.launch

To launch the robot.

Then run the following:

roslaunch rosbridge_server rosbridge_websocket.launch

To create websocket. That connects fine. I start the HTML page in Chrome. The slider loads, the topic /Pioneer3AT/rqt/cmd_vel does not publish. Do I need to edit more of the HTML in order to run with my robot? Thanks.