CAN'T RECEIVE CAN TRANSITION DATA

Hi!I'am using RL78/F13 R5F10BLGKFB  CAN to transit messages(I've used RS-CAN configurator to generate codes).After writing data to according registers(I can see the data when degugging),I set according request transition flag to 1,but I can't receive the data .I've found the according request transition flag is always 1,which make me crazy!