XY Chart - Change Format of "value" on "Y-Axis"

Ignition
,
9

I fixed the error... it was an amateur mistake on my part... instead of working on the tooltip of the bullets, I was working on the tooltip of the legend.
image

Thanks to your tip, Transistor, or reference to your older posts, I also fixed the corresponding transformation of the passed value ...
{name}: {dateY.formatDate('HH:mm')}''.