Issue to copy

Question

Hi,
Why is it having "Invalid procedure call or argument" to the following line?

                    Shell (Command0)  

Command0 is having value below. Relevant paths do exist.

cmd /c copy /y "C:\cmp3g\CODECO_ERROR_a\COANSA216AZTCT22106221059.EI" "C:\cmp3g\CODECO_ERROR_a\NMB"