[TSL]Damage Formula doubt and more than 1 type

[Dark_Ansem]

I have been looking at baseitems.2da and feel a bit confused: how could one change the damage type of lightsabers so that rather than being only Energy is Energy + Slashing?

to give a double-bladed lightsaber a damage formula like this "2d8/2d8" what should I have to do? 4d8 or, being a 2-handed weapon, by default it tries to inflict 2 hits, and therefore I only need to set it to 2d8?

thanks!