/system routerboard ypgrade

Hi guys, I want to do a bulk Mikrotik router board firmware upgrades. The thing is stopping me after the line:
/system routerboard upgrade I have to hit enter and type in yes or no as confirm. Is anyhow I can write in the same line and be accepted something like:
/system routerboard upgrade | yes or / yes ???
Thanks in advance!!!

ok found solution
/system routerboard upgrade
/yes

worked as a charm