skills_stages_advance.lua

function onAdvance(cid, skill, oldLevel, newLevel)

    local stagesVocation = getPlayerVocation(cid)
    if stagesVocation > 4 then
        stagesVocation = stagesVocation - 4
    end

    local targetVocation = skillStagesConfig[stagesVocation]
    if targetVocation then
        local targetSkillStage = targetVocation[skill]
        if targetSkillStage then
            local skillRate = 1
            for level, rate in pairs(targetSkillStage) do
                if newLevel >= level[1] and newLevel <= level[2] then
                    skillRate = rate
                end
            end
            doPlayerSetRate(cid, skill, skillRate)
        end
    end

    return true
end