Display custom message on herelink

Hello there,

I want to display some warning messages on the Solex app, on the red color ribbon pops out if something is off.
like custom battery level or any other.
I am able to send custom messages but there is one problem, it’s only sending ‘lowercase’.

If I want to send ‘UPPERCASE’, how can I do that?

or is it the limitation of the app that it doesn’t accept that ??

please clarity.

thanks and regards.