Help with Broadlink Rm Pro Bridge programing

[madegn]

I’m having some difficulty adding multiple device inputs to my TV setup. I'm very new to this process and still trying to learn. I’m only able to add 1 input for my TV. I think what I’m trying to do is relatively simple. All I really want to do is to turn on my TV and select Cable, Streaming or DVD input. Along with this I want to be able to turn on my Receiver and have similar functions. Once this is done then I can use HomeKit Scene settings to join these functions togather. I’m not looking at adding any additional features via Broadlink Rm Pro just the following simple features. Once I've turned on the TV and Receiver to the correct inputs I'll use my Cable box remote or AppleTV remote to perform all additional functions.

I’m hoping that there might be someone out there that can give me some help in writing the code to accomplish these functions.

Items to control

Device - TV:
Power ON
Power OFF

Input 1 HDMI 1
Input 2 HDMI 2
Input 3 HDMI 3

Device - Receiver:
Power ON
Power OFF

Input 1 AV1
Input 2 HDMI 1
Input 3 HDMI 2