So here is my case.
I would like to update a CMS live item with an array into a multi reference field. I read it should be possible with [ … ] brackets und " … " around the ID.
So I did that with the normal Action in Zapier by Webflow and with a Custom Request.
Both didn´t work for me.
Here is a screenshot of what my custom request look like. I tried the Method PUT, POST and PATCH but with all I get the error.
I also tried this in Integromat and there I get the same error.
Hope you guys have an idea what I can try next