Command Button in one workbook and data to be executed in another workbook

Hi

I have a command button in one workbook and my requirement is that when i click the command button it should call an already saved macro and execute another workbook which include the data. I am using the following code but i am getting run time error

Please Login or Register  to view this content.

MTM Report is the workbook that contains the data and Send_MTM_Email is the macro

Thank you in advance