Custom table as Field on page

Hi! 

So let me explain my problem. I want to be able to register a gender on person. Normally I would do this by configuring a Entity field on the PersonInfo view. However, in IFS Cloud this view is blocked for custom entities so I've thought the following work around:

1. I've made a complete new Custom Entity called CPersonGender with 2 fields
   1. Person_ID - Persistent -  String(100)
   2. Gender - Persistent - Enumeration
2. I created a custom projection on Personhandling and linked this Entity to the Person
3. Added the Entity on the page as a group

Once I configure the binding however, the drop down list for Gender is unusable since no record is linked to the person_ID yet. How can I make the group Create a record if no record is present yet?