A question about realize EPWM TZ CBC by Compss and Epwm X-bar for TMS320F280049

Hi, all

     Question Description:

          I want use Compss registor , epwm X-bar and  Epwm TZ CBC submodule to realize current limit. but I cannot get it .

and my thought describe as  reference manual show as follow:

and the method like the red line .

and the key code as follow:

and is there any problem.  thanks for your help!