Error while passing Worksheet Name via GV

Hi,

Certain excel source face the below error message when I pass the Worksheet name via a global variable.

"OLE or COM processing error. Please make sure Microsoft Access DataBase Engine is properly installed: <''worksheet_name$'' is not a valid name. Make sure that it does not include invalid characters or punctuation and that it is not too long.>."

Among 40 excels which are processed properly by passing sheet name via Global variables, 2 of them faced the error.

When I hardcode the worksheet name in the Excel format, then they run fine.

Clueless on how could this happen to few excels alone.

The DS version I use is 4.1 SP2.

If anybody has faced this error, Pls share your solutions.

Thanks