How to update code mappings Programmatically in Embedded coder 'Code Mappings - Component Interface'

Hi

I m doing some work to generate simulink model and embedded code programmatically.

But I found if i havent click the 'update code mapping' button on function page of a newly created model, my designed 'Peroidic D1' step function wont appear. If there is a programming method to update that without click by manual?

The update button is in ’Embedded Coder‘ - ‘Code Mappings - Component Interface’ - ‘Functions’ page.

Before click:

After: