SWIS test rig

I am experimenting with the SolarWinds SWIS test rig.

I want to update the value in the Comments field for node 469.

I have an Action that successfully gets the information:

GET: Query?query=SELECT+NodeID,Comments+FROM Orion.NodesCustomProperties  WHERE NodeID = 469

my results are:

Content-Length: 51

Content-Type: application/json

Date: Fri, 06 Dec 2013 18:45:30 GMT

Server: Microsoft-HTTPAPI/1.0

{

  "results": [

    {

      "NodeID": 469,

      "Comments": "Change Me"

    }

  ]

}

I just need to find the correct Action string to update the Comments field.

Anyone know the correct query ?

Thanks,

Richard