Hello @jborruel,
As far as I know, a note (label) should NOT be combined directly with a calculation, as in your example…
You should first create a calculate type variable and then reference it inside the label of the note ( as ${…}).
A calculation does not work on a label, but on the value of the variable.
A note only with a calculation, but without a label or hint, gives an error in preview and deployment. So, one of both must be in your example. Could you provide your original note code and a screenshot from the UI?