I have some users in that for one users set_text property is not working for renaming users it is working Hear is my code.Unable to find any script errors also. var cellMachinery = MasterTable.getCellByColumnUniqueName(row, "MachineryName"); var cellApplPoint = MasterTable.getCellByColumnUniqueName(row, "ApplPoint"); var text = cellMachinery.textContent.trim() + " " + cellApplPoint.textContent.trim(); var combo = $find("<%= ddlMapModel.ClientID %>"); combo.set_text(text);