ALSV4_CPP Roll - TwitchBlade/ALS-Wiki GitHub Wiki
The Roll while landing is triggered by AALSBaseCharacter::OnBreakfall_Implementation()
which then calls GetRollAnimation() which is a BlueprintCallable, BlueprintImplementableEvent found in Character BP.
You need to add an override to GetRollAnimation() in your Character BP and copy the content of the function from ALS_CharacterBP.