Change default filter of link field

Hi Guys,

I want to change the default filter of customer selection( by customer name ) to other field of customer (by IC ).

I try to add ‘ic’ to search fields. But it didn’t work.
Below is my screenshot. Hope someone can help. :sob:

S789888 is one of IC

no result came out.

@kenny in search field you should add field name only:

customer_name, ic