Redirecting vmchange output

Good morning!

I am working on a script that uses the vmchange command to eject tapes:

vmchange -res -m 000123 -mt hcart2 -rt tld -rn 2 -rh mediaserver -v 000_00002_ -rc1 123 -e < controlfile > /dev/null

I'm trying to suppress the screen output...

 remove 000123 from media access port of robot number 2 now
        (press <RETURN> to continue)

...but don't seem to be able to do so. I've moved the /dev/null reference, tried to add a 2>&1 type thing...

It's not killing me; I'm just trying to make the screen output cleaner...

I'm running RHEL 6.4 and NB 7.1.

Thanks in advance,

Susan