CRM integration - opt in / out

CRM integration - opt in / out

Hi

I'm new to Zoho Forms, and I'm building a web contact form to integrate with our CRM Leads. The form has an "EMail Opt In" decision box, but in CRM this is represented as an "Opt Out". Therefore in the integration I need a binding like this: (CRM Opt Out)  = NOT (Form Opt In):



How do I go about that?