Quick question regarding Note Range Filter

Hi

I was reading in the Midihub Docs regarding the Note Range Filter. It says:

(Filter) “C# in the 8th octave.”

Which can be written as = C#7.

What if I write only C# (no octave designation)?
Does it then filter all C# across all octaves. I would expect that but it’s not written in clear… hence my question.

Thanks!