Hi ,V2.20a 2.14 My problem is i am sending some messages from a Script file (*.ini) file using some VTREG defined on KEIL for Can simulation like CAN1ID,CAN1L,CAN1B0........CAN1B7 and CAN1IN.In KEIL V2.14 while i am going to PERIPHERAL-CAN dialog i am able to see all the messages in CAN commmunication as well as in CAN Channel windows .but while i am running in a different version KEIL V2.20a messages are not coming in the CAN channel window that is they are not getting read in the application.I am selecting C164CI as my target. e.g. I am sending 5 msg from a signal function like this SIGNAL void cansend() { While(1) { sendmsg1(); swatch(.00025); sendmsg2(); swatch(.00025); sendmsg3(); swatch(.00025); sendmsg4(); swatch(.00025); sendmsg5(); swatch(.00025); twatch(clock/50) } please help me in this regard. Pranav