[Freeswitch-users] secondary outbound gateway - how to prefix?

Hi All, I would like to have a secondary gateway added to freeswitch. To have it used for outbound calling, I need to prefix the dialstring with something like a 9 followed by the 10 digit number. I think that's what this page is explaining: https://freeswitch.org/confluence/display/FREESWITCH/Configuring+FreeSWITCH <condition field="destination_number" expression="^9(1\d{10})$"> Will that use the gateway if the telephone number is prefixed with a 9? Thanks!