RH850 interrupt

I use the RH850/F1KM.Why "#pragma interrupt INTRLIN31UR0 xxx" and "__interrupt" are not supported in my compiler(CS+ for CC).It's error in my compiler.

In Code generation sample,it uses "#pragma interrupt r_Config_UART1_interrupt_send(enable=false, channel=121, fpu=false, callt=false)", but still can't enter the interrupt handler.

i check for the register, the interrupt has been occured,but did not enter the interrupt handler.

I don't know why,so please help me.Thanks.