Sieve fileinto :create is failing

[Ron Garret]

I’m trying to get a sieve script to move messages into a folder, and to create that folder if it doesn’t already exist.  I’m following the example code at:

https://doc.dovecot.org/configuration_manual/sieve/examples/

and doing this:

> require ["fileinto", "mailbox”];
> …
>  fileinto :create “myfolder”;
> …

That results in this error in the log file:

error: unknown tagged argument ':create' for the fileinto command

What am I doing wrong?

rg