I found some time 
I’ve cooked op a test version and published it to the App Store: https://homey.app/en-gb/app/com.uc.heimdall/Heimdall/test/
Unfortunately I wasn’t able to actually test it as I have no Keypad currently available for testing, but I expect it to work as I have tested the actual code that establish the Silent Code earlier, now I just added a flow card to it.
You can use it like this:
Since you can add one digit you can make 10 (0-9) different flows to do whatever you like.
