Modality in Hegel's "Doctrine of essence" (Science of Logic): necessity or contingency?

In Science of logic, Hegel ends the "objective logic" with a pormenorized analysis of modal categories (reality, necessity and possibility). We will show that this part can be understood in opposition to the kantian theory of modality in KrV. In order to defend this purpose, we will structure the text in three parts: in first place, we will expose the modal developing in KrV; in second place, the idea of Hegel's << doctrine of essence >>; and, in last place, the new interpretation of Hegel's conception of modality.