How would I set an objective to 0 using the scoreboard command if it is possible?

My command so far is:

    /scoreboard objectives

But when I press tab after that it shows a list of what could be there, saying *"add, list, remove, setdisplay"* but it doesn't say set. 

I know I have done this in one of my other maps but they were in 1.8 and I'm using 1.11 now.