Why the stm32f103 CAN in the simulink can not distinguish

Hello everyone:

  I am a vehicle software engineer. Now I need to do a industry control project. I want to use stm32f103zdt6.First I configure the .ioc file and creat a simulink model and configure it.Second I drag the STM32_config block in the model and configure the block.Then I drag the CAN_IT block in the model,but I find the block can not read the ioc file's setting.In the ioc file I enable the CAN RX0 and SCE interrupt,but in the Simulink The CAN_IT block can not read it.I think this is a bug.Please fix the bug quickly.