I’m trying to create a custom field with a pxselector where I can type in partial text in the field and it shows the closest values when you do. This does partial text and right in the text box itself. Most fields do it that are pxselector. My understanding is that it was a property under aspx that did this. Under Grid Properties there is a FastFilterFields Shown below

Its not working for me. I tried FilterByAllFields too, some fields use that. What am I missing?
This is the behavior I am lookign for:
