Custom series with sqrt not working

[julianoes]

Problem description

I'm trying to use the ground speed custom series but it doesn't accept the example for ground speed. When I use math.sqrt() instead of sqrt() it works.

Answer these questions (or I will ignore your issue)

1. Linux mint with small changes on top of main: e4f678b
2. Done
3. Don't know
4. N/A

[Jaeyoung-Lim]

I can confirm that this is still a problem