{
  "layout":"exec",
  "caption": "API Validation",
  "onecolumn": true,
  "fields": [
    { "control": "textbox", "name": "message", "caption": "Message", "default": "Hello" },
    { "control": "textbox", "name": "delay", "caption": "Delay (ms)", "default": 1000 },
    { "control": "button", "name": "invoke", "value": "Invoke API Call", "onclick": "XForm.Post(xmodel.id, {}, { message: xmodel.get('message'), delay: xmodel.get('delay') }, function(rslt){ XExt.Alert(JSON.stringify(rslt)); });" }
  ]
}