Filter Out word in Kibana

In Kibana, I'm trying to filter out all instances of a field that match this:

<3 letters><4 numbers><1 letter>

No spaces or anything.

Can anyone help me with that?

Hello @Jim_Thunder -

Here's a similar question that might help you - Kibana Discovery Regex

Seems you may need to use Lucene query syntax.

Hi, I see that the Lucene Syntax has a lot, but the documentation isn't all that clear.

I can't find anything relating to what I'm try to do.

Any advice?