Global search pick list

is there a way to get search on multiple fields in a pick list.
Not only on one field, but more global on multiple fields of the data.
Pick list can supply with the template option more than only one field.

The PickList component provides search only for specified TextProperty. It is possible to extend your model with additional property that combines desired other property values and use it as TextProperty.

Can I override the search function or
Do i need to alter each time on a search the Source / Target.
The search on multiple fields can give as result a list of different strings which i want to display in the source / target area.
The search is on the fields that is in the template.

There is no way to override the search functionality. The PickList is using two ListBox components where TextPropery is actually used:

I wil implement the second option.