[Bhruic]

Seems to be working for me now. Should have been math.max, not math.min

for i = 1, acnt do
    local spell_name = tab_spells[i].s
    if Attack.act_is_spell(0, spell_name) then
      tab_spells[i].prob = 0
    else
      tab_spells[i].prob = math.max(0, math.ceil(tab_spells[i].prob))
    end
end