Lowercase all but first character

Hello to the community, and thanks to Florian for an amazing program.

I need help with an action.

What i want to do, is to lowercase all the characters on the "title" field but the first one.

Example

The Greatest Song Ever > The greatest song ever

thanks in advance for your help

https://docs.mp3tag.de/actions/case-conversion --> Sentence

Thanks so much

Ouch.. I read that page and missed the Sentence part on it