Still new with the Pronto Script format, not sure if what you are discussing is what I am would like to do. Is this correct, I can link into HAI Pronto Script to execute button or control/lighting functions without opening HAI Pronto Script? Two things I would like to do is link to commands for the Jany AquaLink RS interface and the CentraLite Elegance lighting system due to no more available serial ports for either system. I have programmed both systems to the HAI Omni Pro II controller via RS-232 with two way communication. I have all the protocol documents, but still missing something. Any help or guidance would be greatly appreciated.