GetSkyshardDiscoveryDistanceM(???)

[Masteroshi430]

Hi there,
Do you guys know how (or maybe when) to use GetSkyshardDiscoveryDistanceM() ?

apparently GetSkyshardDiscoveryDistanceM(SkyshardId) doesn't work,
neither GetSkyshardDiscoveryDistanceM(SkyshardIndex)
or maybe there are conditions required to get the info ?

what value to put in the parentheses isn't specified in the notes.

EDIT: maybe it's not the distance to a skyshard but the distance at which a skyshard is considered "discovered", this would explain why it is always 250m...