If anyone is curious as to how to do it.
local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_TYPE, 1)
setCombatParam(combat, COMBAT_PARAM_DISTANCEEFFECT, CONST_ANI_FIRE)
setCombatFormula(combat, COMBAT_FORMULA_LEVELMAGIC, -1, -10, -1, -20, 5, 5, 1.4, 2.1)
function...