function CloseCaseRecord(itemID) {
var item = {
    __metadata: {
        type: "SP.Data.CaseRecordListItem"
    },
    CaseStatus: "Closed"
}
$.ajax({
    url: _spPageContextInfo.webAbsoluteUrl + "/_api/web/lists/GetByTitle('CaseRecord')/items(" + itemID + ")",
    type: "PATCH",
    data: JSON.stringify(item),
    headers: {
        "Accept": "application/json;odata=verbose",
        "Content-Type": "application/json;odata=verbose",
        "X-RequestDigest": $("#__REQUESTDIGEST").val(),
        "X-HTTP-Method": "PATCH",
        "If-Match": "*"
    },
    success: function(data, status, xhr) {
        alert('Case closed successfully');
        location.reload();
    },
    error: function(data) {
        alert(data.responseJSON.error);
    }
});
}