Set PowerBI datasource parameters programatically using PBI API

Thanks for the reply , effectively I was trying to make update with this API today , 

My actual issue is to use the right body params to update the datasource.

Here's what the API preconize.

"updateDetails": [ { "datasourceSelector": { "datasourceType": "Sql", "connectionDetails": { "server": "My-Sql-Server", "database": "My-Sql-Database" } }, "connectionDetails": { "server": "New-Sql-Server", "database": "New-Sql-Database" } },

 Here's what I'm sending 

I'm gettin 400 error 

{
   "updateDetails":[
      {
         "datasourceSelector":{
            "datasourceType":"AzureTables",
            "connectionDetails":{
               "account":"prodcallxxx",
               "domain":"table.core.windows.net"
            },
            "datasourceId":"2b23933c-34a7-4247-94ff-xxxxxx",
            "gatewayId":"d1e2a03c-0f55-42fe-b0dd-xxxxxxx"
         },
         "connectionDetails":{
            "account":"prodcallrecord",
            "domain":"table.core.windows.net"
         }
      }
   ]
}

Error

{
  "error": {
    "code": "InvalidRequest",
    "message": "Parameter UpdateDetails is missing or invalid"
  }
}