Data Entry Wizard conditional link to records

I have also tries using two different models for contact object and using the field condition on one of them that says “Primary_contact__c= true” i.e fetch the contact record where, field named primary contact = true the other does not have any such condition it just fetches the contact record linked to account and i limited both the models to fetch only one record, but this dint worked at all.

Please help solve this…!!