String a = "{
 "colmdl":[{"field":"srrno"},
    {"field":"loadport"}],
 "suppressClipboardPaste":true,
 "excelSheetName":"Grid_sheet",
 "editable":true,
 "excelExportType":"Toolbar"
}"
this is I stored in as a string , i need to set this as a map.
for ex colmdl,suppressClipboardPaste,excelSheetName,editable, excelExportType these all should be key.
 
     
    