CCS/TMS570LS0432: how to send RTR frame?

Part Number:TMS570LS0432

Tool/software: Code Composer Studio

Hi there

I want to send RTR frame from microcontroller1 to microcontroller2. I don't know how I should Config the microconroller1. these are my HALCOGEN configuration:

and I am using 

canSendRemoteFrame(canREG1,canMESSAGE_BOX1);

to send RTR frame. could you please tell me what I should do?

thanks a lot.