with(
  local!response: a!httpQuery(
    method: "GET",
    url: "http://web adrress for look up",
    headers: a!httpHeader("X-Appian-User", loggedInUser()),
    queryParameters: 
    {a!httpQueryParameter("AdId", if(isnull(ri!username),loggedInUser(),ri!username)),
     
    }
  ),
  local!results: a!fromJson(local!response.result.body),
  local!display:cast(
      'type!{urn:com:sprint:appian:types:SAMS:v1_0}cdt',
      a!fromJson(
        local!response.result.body
      )
    ),
/*  a!fromJson(local!response.result.body)*/
  if(
    or(
      not(local!response.success),
      isnull(local!response.result.body)
    ),
    rule!to_display_data_In_Editable_Grid(cdt_Any_Type:local!display),
local!results
  ))


-----------------------------------------------
below Data what I am getting display in interface view
______________________________________________________


{"DESC":null,"ERROR":null,"STATUS":1,"DATA":"[{\"Coloumn1\":\"00\",\"Coloumn2\":\"NO CAUSE CODE ENTERED\",\"Coloumn3\":1.0,\"Coloumn4\":\"\\\/Date(1440448162000-0500)\\\/\",\"Coloumn5\":null,\"Coloumn6\":\"\\\/Date(1440448162000-0500)\\\/\"},{\"Coloumn1\":\"01\",\"Coloumn2\":\"EQUIPMENT\/HARDWARE\",\"Coloumn3\":1.0,\"Coloumn4\":\"\\\/Date(1440448162000-0500)\\\/\",\"Coloumn5\":null,\"Coloumn6\":\"\\\/Date(1440448162000-0500)\\\/\"},{\"Coloumn1\":\"02\",\"Coloumn2\":\"WORK ERROR\",\"Coloumn3\":1.0,\"Coloumn4\":\"\\\/Date(1440448162000-0500)\\\/\",\"Coloumn5\":null,\"Coloumn6\":\"\\\/Date(1440448162000-0500)\\\/\"},{\"Coloumn1\":\"03\",\"Coloumn2\":\"SOFTWARE\",\"Coloumn3\":1.0,\"Coloumn4\":\"\\\/Date(1440448162000-0500)\\\/\",\"Coloumn5\":null,\"Coloumn6\":\"\\\/Date(1440448162000-0500)\\\/\"},{\"Coloumn1\":\"04\",\"Coloumn2\":\"ORDER PROCESS\",\"Coloumn3\":1.0,\"Coloumn4\":\"\\\/Date(1440448162000-0500)\\\/\",\"Coloumn5\":null,\"Coloumn6\":\"\\\/Date(1440448162000-0500)\\\/\"},{\"Coloumn1\":\"05\",\"Coloumn2\":\"CUSTOMER\",\"Coloumn3\":1.0,\"Coloumn4\":\"\\\/Date(1440448162000-0500)\\\/\",\"Coloumn5\":null,\"Coloumn6\":\"\\\/Date(1440448162000-0500)\\\/\"}],@attributes:[@anyAttribute:[_dirty:false,_bannerText:,_refresh:]]]

____________________________________________________________

In tempo 

An Error Has Occurred

Expression evaluation error at function a!taskui_taskRejectionReassignment: The contents field on a column layout may only contain components. Received Dictionary at index 1.