[Samba] unable to edit a file

[Pitchumani Guruswamy]

hi,

I have a file in a samba share with the following attributes:

[dir1002]
        comment = webmin share
        write list = usr1,usr2
        path = /misc/removable/dir1002
        read only = no

The files are created with the following ownership(the file system is vfat):
-rwxr-xr-x  1 root root    0 Feb 14 07:23 New Text Document.txt
-rwxr-xr-x  1 root root    4 Feb 14 07:28 txt1.txt

I'm able to create/copy and delete a file. However I'm unable to edit the
files.

Am I missing something?

thanks,
pitchu