Issue order unit is called and returns true, but the unit doesn't do anything

[HerlySQR]

Hello, I don't know why but I have this trigger that uses a threat system that when that system issues an order then make the unit cast their spells, here is part of the code:

---@param u unit
---@param spell integer
local function insertSpell(u, spell)
    if IsPlayerInGame(GetOwningPlayer(u)) then
        return
    end
    local set = UnitSpellAIs[u]
    if not set then
        set = Set.create()
        UnitSpellAIs[u] = set
        ZTS_AddThreatUnit(u, false)
    end
    set:addSingle(SpellAIs[spell])
end

do
    local t = CreateTrigger()
    TriggerRegisterAnyUnitEventBJ(t, EVENT_PLAYER_UNIT_ISSUED_ORDER)
    TriggerRegisterAnyUnitEventBJ(t, EVENT_PLAYER_UNIT_ISSUED_TARGET_ORDER)
    TriggerAddAction(t, function ()
        if not ZTS_IsEvent() then
            return
        end
        local creep = GetOrderedUnit()

        PolledWait(1.)

        local set = UnitSpellAIs[creep]
        if set then
            DisableTrigger(t)
            print(set)
            for func in set:elements() do
                print(func)
                local res = func(creep)
                print(res)
                if res then
                    break
                end
            end
            --set:random()(creep)
            EnableTrigger(t)
        end
    end)
end

SpellAIs[spell] = function (u)
    if isPaused[u] then
        return false
    end
    if not UnitCanCastAbility(u, spell) then
        return false
    end
    local abil = BlzGetUnitAbility(u, spell)
    local level = GetUnitAbilityLevel(u, spell)
    local range = convertedRange(BlzGetAbilityRealLevelField(abil, ABILITY_RLF_CAST_RANGE, level - 1))
    local area = BlzGetAbilityRealLevelField(abil, ABILITY_RLF_AREA_OF_EFFECT, level - 1)
    if hasUnitTarget then
        local target
        if enemyTarget then
            local maxThreat = -1
            ForUnitsInRange(GetUnitX(u), GetUnitY(u), range, function (u2)
                if not BlzIsUnitInvulnerable(u2) and UnitAlive(u2) then
                    local threat = ZTS_GetThreatUnitAmount(u, u2)
                    if threat > maxThreat then
                        target = u2
                        maxThreat = threat
                        print("c", u2)
                    end
                end
            end)
        end
        if allyTarget then
            target = GetRandomUnitOnRange(GetUnitX(u), GetUnitY(u), range, function (u2)
                return IsUnitAlly(u, GetOwningPlayer(u2)) and UnitAlive(u2)
            end)
        end
        if target then
            print("d", target)
            return IssueTargetOrderById(u, order, target)
        end
    elseif hasPointTarget then
        area = area > 0 and area or 200.
        local x, y = GetConcentration(GetUnitX(u), GetUnitY(u), range, GetOwningPlayer(u), area, enemyTarget, allyTarget)
        if x then
            return IssuePointOrderById(u, order, x, y)
        else
            local random = GetRandomUnitOnRange(GetUnitX(u), GetUnitY(u), range, function (u2)
                return ((enemyTarget and UnitAlive(u2) and IsUnitEnemy(u, GetOwningPlayer(u2)) and not BlzIsUnitInvulnerable(u2)) or (allyTarget and IsUnitAlly(u, GetOwningPlayer(u2))))
            end)
            if random then
                return IssuePointOrderById(u, order, GetUnitX(random), GetUnitY(random))
            end
        end
    elseif hasNoTarget then
        local count = 0
        ForUnitsInRange(GetUnitX(u), GetUnitY(u), area, function (u2)
            if enemyTarget and (not IsUnitEnemy(u, GetOwningPlayer(u2)) or BlzIsUnitInvulnerable(u2)) and UnitAlive(u2) then
                return
            end
            if allyTarget and not IsUnitAlly(u, GetOwningPlayer(u2)) and UnitAlive(u2) then
                return
            end
            count = count + 1
        end)
        if count >= 1 then
            return IssueImmediateOrderById(u, order)
        end
    end
    return false
end

Even if I added a wait and the issue order function returns true, the unit doesn't do anything, what's wrong?

 

[Luashine]

iirc, the Orders API always returns true when it queues the order, unless the function call arguments are blatantly invalid. This is one of the reasons I go in depth when testing for jassdoc.