Draft: makedataset.m: pass xls_sheet and _range as inputs

Related to #1840 (closed)

matlab/utilities/dataset/makedataset.m

@@ -119,7 +119,11 @@ end
 % Load the data in a dseries object.
 if ~isempty(datafile)
     if ~( newdatainterface==0 && (strcmp(datafile(end-1:end),'.m')|| strcmp(datafile(end-3:end),'.mat')))
-        DynareDataset = dseries(datafile);
+        if strcmp(datafile(end-3:end),'.xls') || strcmp(datafile(end-3:end),'.xlsx')
+            DynareDataset = dseries(char(datafile,DynareOptions.xls_sheet,DynareOptions.xls_range));
+        else
+            DynareDataset = dseries(datafile);
+        end
     else
         if strcmp(datafile(end-1:end),'.m')
             % Load an m file with the old interface.