GetRESTProxy INVALID_FUNCTION error in CXone Studio

Running into an issue with the GetRESTProxy function in a Studio Snippet. The script fails with an INVALID_FUNCTION error on this line: ASSIGN restResult = GetRESTProxy(“https://api.nicecxone.com/api/v2/interactions”);. Checked the docs and the syntax looks right, but it’s not resolving. Any idea what I’m missing?