Required permission: VariableWrite

Use the following format to update variable1 and variable2 of process1.

POST http://my_server:3580/nivariable/BatchWrite

POST JSON data

        [{
   "Url"
   : "ni.var.psp://localhost/process1/variable1", "Value"
   : "false"
   }, {
   "Url"
   : "ni.var.psp://localhost/process1/variable2", "Value"
   : "\"this is a new string value\""
   }]
      

POST XML data

        <?xml version="1.0" encoding="utf-8"?>
   <BatchWriteArguments>
   <BatchWriteArgument>
   <Url>ni.var.psp://localhost/process1/variable1</Url>
   <Value>false</Value>
   </BatchWriteArgument>
   <BatchWriteArgument>
   <Url>ni.var.psp://localhost/process1/variable2</Url>
   <Value>this is a new string value</Value>
   </BatchWriteArgument>
   </BatchWriteArguments>
      

If all variable writes succeed, the server returns the following response with a response body of an empty array:

HTTP/1.1 200 OK

Response body (JSON)

  []

Response body (XML)

        <?xml version="1.0" encoding="utf-8"?>
   <BatchWriteErrors>
   </BatchWriteErrors>
      

If one or more variable writes fail, the response includes error descriptions. For example, if variable2 is not writable, the server returns the following:

HTTP/1.1 200 OK

Response body (JSON)

        [{
   "Url"
   : "ni.var.psp://localhost/process1/variable2", "Error"
   : {
   "code"
   : "", "message"
   : {
   "lang"
   : "en-us", "value"
   : "ni.var.psp://localhost/process1/variable2 is not writable"
   }
   }]
      

Response body (XML)

        <?xml version="1.0" encoding="utf-8"?>
   <BatchWriteErrors>
   <BatchWriteError>
   <Url><ni.var.psp://localhost/process1/variable2</Url>
   <error xmlns="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">
   <code>0</code>
   <message xml:lang="en-US">"ni.var.psp://localhost/process1/variable2 is not writable"</message>
   </error>
   </BatchWriteError>
   </BatchWriteErrors>