Creating a rule with multiple criterias linking to Salesforce Opps

Hi
We would like a rule for when a Salesforce Opportunity is in Stage 7 and when the Contact Portfolio field is marked as true to create a task in Asana.

The Contact Portfolio field is a checkbox field but i have created a text field to say true or false on the project board.

How can i get this rule to work? can an asana rule do this or do i need to look at say Zapier?