[Samba] can't write to share

[Leonardo Carneiro]

hi everyone.
i just want to create a share that anyone can read and write. simple 
that. what i'm doing wrong?

here is my smb.conf

    [global]
            netbios name = delsoftserver
            writeable = yes
            server string = Samba Server Version %v
            workgroup = WORKGROUP
            security = share
            passdb backend = tdbsam
            unix charset = ISO8859-1

    [FFe]
            writeable = yes
            path = /dados/NFe
            public = yes
            create mask = 0777
            force create mode = 0777
            directory mask = 02777
            force directory mode = 02777
            guest ok = yes
            browsable = yes
            read only = no