Harlowe Random Event formatting help

Hello all!
I'm attempting to use the (either: "event1" , "event2") function. But I want to be able to include quotation marks in the event text. For example, I'd like to say something like:

The referee flipped the coin and shouted, "Heads!"

OR

The referee flipped the coin and shouted, "Tails!"

However, I can't do this because the additional quotations confuses the program. I tried formatting it as such:

The referee flipped the coin and shouted, (either: ""Heads!"" , ""Tails!"")

Does anyone have an idea how I can still be allowed to use quotation marks in these "either" statements? Thanks a bunch!