attachment location

hi, all

I am working on attachment. I don't know how to get the location of a
sending email' attachment.

I want to do some operation before the email be sent.

is "Source Property" works? but when i use it like this
"objMailItem.attachments.Source" or "objMailItem.attachments.item(1).source",
it seems wrong.

pathName property seem work, but when i check the mail attachment item,
pathName is null.

i need help.

thanks.