How to obtain info from current track with Nyquist

Audacity 3 Help Forum Windows
1

Hi, I have this Nyquist code to obtain a piece of information from the first track:

(let* ((track-info (aud-get-info “tracks”))
(first-track (first track-info))
(vzoommax (cdr (assoc 'VZOOMMAX first-track))))
(if vzoommax
(first vzoommax)
“VZOOMMAX no encontrado en la información de la pista.”))

How Can I get the information from the CURRENT TRACK?

Thank you so much for your help!

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