RE: Automatic recognition when typing customer name
Thanks for your answer Marco! This however does not solve the problem.
I think I might not have been clear.
What we want is an automatic recognition when typing in a name. This works with fields which uses the arrow down, which will show you a dropdown and where you can select a value. Just like this one: 
But (this is my question) there is a dropdown menu avaible in the code, but won't show when typing if the record has three dots in there.

This won't allow you to type text and transform this to the right number which is needed.