Customising UD Table on click search

Hi

I have created a new UD table using the UD03 preset table. I have renamed two of the columns to what I want them to be called.

Key1 = Code ID
Charecter01 = Description.

On the landing page for this new application, I have enabled the search function on the Code ID field. what I want to know is how do you bring the same column headings into the search function they are currently set as Key 1 and chareter01 not the custom description see image below

Thanks