Search Filter: Search only Custom Field instead of the title

Hello everyone, I am using a Bricks Search Filter on an overview page. By default, this only searches the title of the posts. Instead of the title, I would like a custom field of the posts to be searched. Is there an option for this?
Thank you in advance!

Can someone Help? Thanks in advance!

Can refer to this example

You can write me if you need help
username - mherhenry (everywhere(FB, IG))