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Hi Thomas: Im guessing you are trying to open the opendap dataset with a URL of: http://www.ifremer.fr/thredds/dodsC/mwf/ers1/monthly?quality_flag[10:1:10][0][10:1:10][10:1:10] ? Unfortunately, you cannot use a constraint expression in the dataset URL. So you have to open http://www.ifremer.fr/thredds/dodsC/mwf/ers1/monthly and then issue data requests to that. Ticket Details =================== Ticket ID: CPD-142623 Department: Support netCDF Java Priority: Normal Status: Closed