What would the syntax be for Immune to Sleep ?

[PsiKoTiK]

I tried using IMMUNE:sleep , and testing with a Beholder sleep Ray but my test character was still rolling saving throws. Should the roll still happen and the player just remind the DM about the immunity , or (most likely the case) I was using the incorrect values.

[Olodrin]

Seconded, I was just about to ask this question

[Trenloe]

Immune only applies to specific damage types, see the list under the modifiers table here: https://www.fantasygrounds.com/wiki/index.php/5E_Effects#Modifiers