CCS/MSP432P401R: The question of example program of timer_a_pwm_mode

Part Number:MSP432P401R

Tool/software: Code Composer Studio

Hello everyone! I just learned the grammar of  code composer studio, then I use the example which called timer_a_pwm_mode to observe the PWM situation.

Unfortunately, I did not get the brightness variation of LED in this code.

So, I want to know how to use this code to create another code of  breathing light?

I appreciate any help.

Sincerely thanks!