BUG with /tool fetch ?

I wrote a script to used for backup file , in the script :
/too fetch upload or download file from ftp , when execut in the Terminal ,it will appear “-- [Q quit|D dump|C-z pause]” , and it will do not Execute next command .

So … is it a bug ? or how to solve ???

Full Script :

:global fn
/
interf pptp-clien
:set fn [get 0 user]
/
export file=$fn
/system backup
:delay 5
save name=$fn
/
:delay 5
/tool fetch address=“192.168.1.250” src-path=“$fn.rsc” user=“autobak” mode=ftp password=“au123abc” upload=yes dst-path=“$fn.rsc”
:delay 5
/tool fetch address=“192.168.1.250” src-path=“$fn.backup” user=“autobak” mode=ftp password=“au123abc” upload=yes dst-path=“$fn.backup”

Problem :
when it execute this command :
“/tool fetch address=“192.168.1.250” src-path=”$fn.rsc" user=“autobak” mode=ftp password=“au123abc” upload=yes dst-path=“$fn.rsc” ,
it stop execute next command .