You are right. As our filter triggers every time there is a new letter added on the text field, as soon as there is an M typed, our filter will detect it as a restricted keyword and delete it. We'll implement a delay so it works as you expect it. Thanks for letting us know

Please use \bEM\ as the regexp:

Here's a breakdown of this regular expression:

\b is a word boundary anchor. It asserts a position at the start or end of a word.

EM is the literal string we want to match.

\b again asserts a position at the end of the word.

This pattern ensures that "EM" is matched only when it is a whole word, such as in "EM 2024", but not when it is part of another word, such as "Emily" or "Emma".