opening a file in VB

[Dummy Excel]

Hi,
Im a little rusty with VB, as I haven't used in quite sometime, so please bear with me!
im trying to open a file and using the below code:

    'Opening Monthly Summary Report
    MsgBox "Please Open Monthly Summary Report", vbOKOnly, "Monthly Summary Report"
    H = Application.GetOpenFilename("Excel Files (*.xlsx),*.xlsx")
    Workbooks.Open (H)
    RawData = ActiveWorkbook.Name

although when i run the code line by line ie F8, it jumps head after it reaches line "Workbooks.Open (H)"
why is that?
is there a better way to open an external file these days?

thanks
Sam

 

[Fluff]

Do you mean that it's not opening the workbook?
If so what is the value of H ?