Open Save File Dialog with Default Path

Hi All,

I want to open a "Save File Dialog " with some default path.

Like when user run that script I want to open  a "Save As" dialog box with default path "/Volumes/<shared name>/<folder name>/.. ."

I am using

File.SaveDialog(prompt, filter);

but it doesn't open to the location by default that I want to open.

Thanks

Harsh