When true, the result of Requirement->Evaluate() is logically inverted before being combined with the rest of the expression.
This boolean flag (bool) belongs to FInteractionRuntimeRequirementEntry under InteractionRuntime|Requirements.
Blueprint or editor workflows can write this value when constructing, overriding, or customizing the owning object.
UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "InteractionRuntime|Requirements", meta = (EditCondition = "Requirement != nullptr", EditConditionHides))
bool bInvert = false;