Redis in Terraform

Hi all,

Trying to build a redis instance in google. Having some issues with the authorised network argument.

So my argument looks like this

authorized_network = “${element( ,0)}”

But when running a plan / apply, I get the following output

google_redis_instance.redis: At column 3, line 1: element: argument 1 should be type list, got type string in:

${element( ,0)}

Sounds like it might need an array somewhere, but no idea where. Have tried lots of different things.