How to Create this HubSpot CRM Deal Field Trigger

Hi. My goal is to only trigger an automation when I change a CRM Deal field (“single checkbox” field) to “Yes”.

I don’t want the automation to trigger when I change a different field, even if the field in the screenshot is set to “Yes”. Only when I change that specific field to “Yes”, then the automation should trigger. How can I do this? Thank you.

Try to create a webhook for new Deal and filter based on the custom field before going to another step.

Thanks. I didn’t know how to do that. I just made the trigger any change in the Deal form while the “Save to Google Calendar” value is not null.