bug fixing

matlab/src/classes/@MatMust/MatMust.m

@@ -183,7 +183,7 @@ classdef MatMust < handle
             %refine date string to adapt MATLAB date format
             for i=1:numel(data{1})
                 if isempty(data{1}(i).data)
-                    fprintf('+++ WARNING\n%s for %s\n', 'No Data existing in time span', data.name)
+                    fprintf('+++ WARNING\n%s for %s\n', 'No Data existing in time span', data{1}.name)
                     continue
                 end
                 data_par = data{1}(i).data;