// FIXME:FG:6.2:OLAT-3736 a use a charsetprovider interface which can deliver the selected charset of a user
//String charset = UserManager.getInstance().getUserCharset(ureq.getIdentity());
// As a temporary workaround use the default charset
String charset = WebappHelper.getDefaultCharset();
ExcelMediaResource emr = new ExcelMediaResource(res, charset);
ureq.getDispatchResult().setResultingMediaResource(emr);
} else if (cmd.equals(CMD_FILTER_NOFILTER)) {
// update new filter value
setActiveFilter(null);
fireEvent(ureq, EVENT_NOFILTER_SELECTED);