How do we address employee with ODA using their preferred name?

Summary:

Need to address employee by preferred name in ODA widget

Content (required):

We are implementing ODA and I have changed the greeting to address the employee by name (${profile.firstName}) but business wants to use the preferred name where one is populated. Is it possible to use preferred name where populated or first name where it is not?

I have looked at the "Display Name" as we can set up the format of that but it won't work either. The display name pulls in the "Known As" name which I assume is the same as preferred Name but if we create a display name just using the preferred name it will be blank if someone hasn't set up a preferred name in Fusion. Ideally need to used preferred name where populated or first name where it is not. Can't see a way of doing it without creating an integration to populate preferred name with first name where preferred