Sorry, it doesn’t work.
But if I create a BAT-file which contains the command (copy *txt test_new.txt /b/y) and starts the BAT-file with the macro it works:
Set oShell =
Content of the BAT-File “make_a_copy.bat”:
copy *.txt test_new.txt /b /y
So, thank You for Your help, even if it’s not the direct solution.