save data from LabVIEW2010 to Excel (Win7) with the format xlsx

[smercurio_fc]

Then you need to check if the file exists first using the Check if File or Folder Exists VI. If it exists, use the Save method for the workbook class. If it doesn't exist, use the Save As method for the workbook close. For the Close method wire a False to the SaveChanges parameter.

All of the documentation for the Excel ActiveX interface can be found on MSDN.

[zäpfle · Accepted solution]

Spoiler

Thanks all, special thanks to smercurio_fc

I modifyed the "Write Table To XL_Test1 MOD.vi" a little bit and the result is the best solution for me.

best regards zäpfle