{ 
  "table":"all_controls",
  "layout":"form",
  "onecolumn":true,
  "caption": "File Upload Validation",
  "fields": [
    {"name":"x_primary", "type":"int", "key":1},
    {"name":"x_file1","type":"file","caption":"Small Image", "controlparams": { "data_folder": "tutorials_all_controls" },
      "validate": ["Extension:jsh.Config.supported_images","MaxSize:100000"]
    },
    {"name":"x_file2","type":"file","caption":"Excel File", "controlparams": { "data_folder": "tutorials_all_controls" },
      "validate": ["Extension:['.XLS','.XLSX','.XLSM']","Required"]
    }
  ]
}