Hello,
as I had the same question and did not find an answer to it, I'm posting what I found out. (R2024 FD03)

I have a case where I need the text in multiple sketches to be changed simultaneously so I wanted to drive the text by a string parameter. Unfortunately there's no way to create a formula in the text-edition inputbox.

Following my solution:

Best Regards
Nils Schütz