Simulate the behavior of search with '*' character

I need to simulate the behavior of column 1 of Item 76(Matrix) of form 392 (JE). In other words i need to associate an account search to a field in a form created by me. When I select the account that I wish, the field is filled with that value.

I only find 'Formatted search' topics in forum. I don't wish formatted search, because the add-on must be full automatic. The user don't need to do anything, don´t need to configure nothing.

Can I simulate that?

Thanks to all,

Best regards

Ricardo Pereira