Can the GS-911 get the OEM horn on a BMW 1250 RT-P to work with the horn button

[K166Matt1250 RT-P]

G'day all.  I'm Matt from Australia with a newish BMW1250 RT-P.  I've run into the common issue that when used as a job bike, the Police use the horn button but it actuates the sirens.

Can you use the HEX GS-911 tool to recode the push horn button on the left handlebar of the BMW 1250 RT-P so that the OEM horn sounds or is this something only a dealer can do?

I've been able to connect my GS-911 and actuate the OEM horn without any issues. I found the OEM horn surprisingly loud

TIA

Matt