Add corpse to a hero unit

If you make a regular unit that has a model of a hero one, when the unit dies it doesn't decay so, it's possible to add a corpse to a hero unit model in order to make it appear when the unit dies, instead of playing its dissipate animation?

Thanks in advance
PS: sorry for my english

yeah, you'll have to edit the model

EDIT: hero models contain no corpses, therefore, cannot decay

even so, there is no corpse that comes out while they decay