Recycle (trash) folder in SMB shares

When I used linux servers for sharing via SMB, I use the recycle function of samba:

vfs objects = recycle

recycle:exclude = *.tmp *.temp *.o *.obj ~$* *.~??

recycle:excludedir = /tmp /temp /cache

recycle:repository = Trash

recycle:keeptree = Yes

(and create the /shares/xxx/Trash folder)

I can add this to the WD Mybook configuration by direct editing /etc/samba/overall_share but the configuration is removed every time someone edits the share thfough the web. 

¿Is there any way to enable this function without this problem?


Lets see what other users can provide on this topic since this is not a supported procedure.