no scripter in the world can help, join if your s2 or s3

[strong cove]

function tower.Spawn(player, name, cframe, previous)
    local allowedToSpawn = tower.CheckSpawn(player, name, previous)

    if allowedToSpawn then
        local newTower
        local oldMode = nil

        if previous then
            oldMode = previous.Config.TargetMode.Value
            previous:Destroy()
            newTower = ReplicatedStorage.Towers.Upgrades[name]:Clone()
        else
            newTower = ReplicatedStorage.Towers[name][name]:Clone()
            player.PlacedTowers.Value += 1
        end
        
        local ownerValue  = Instance.new("StringValue")
        ownerValue.Name = "Owner"
        ownerValue.Value = player.Name
        ownerValue.Parent = newTower.Config

        local targetMode = Instance.new("StringValue")
        targetMode.Name = "TargetMode"
        targetMode.Value = oldMode or "First"
        targetMode.Parent = newTower.Config

        newTower.HumanoidRootPart.CFrame = cframe
        newTower.Parent = workspace.Towers
        newTower.HumanoidRootPart:SetNetworkOwner(nil)

        local bodyGyro = Instance.new("BodyGyro")
        bodyGyro.MaxTorque = Vector3.new(math.huge, math.huge, math.huge)
        bodyGyro.D = 0
        bodyGyro.CFrame = newTower.HumanoidRootPart.CFrame
        bodyGyro.Parent = newTower.HumanoidRootPart

        for i, object in ipairs(newTower:GetDescendants()) do
            if object:IsA("BasePart") then
                PhysicsService:SetPartCollisionGroup(object, "Tower")
            end
        end

        player.Cash.Value -= newTower.Config.Price.Value

        coroutine.wrap(tower.Attack)(newTower, player)

        return newTower
    else
        warn("Requested tower does not exist", name)
        return false
    end
end
SpawnTowerFunction.OnServerInvoke = tower.Spawn

this is the tower.spawn function

this is the checkspawn function

function tower.CheckSpawn(player, name, previous)
    
    local towerExists = ReplicatedStorage.Towers[name]:FindFirstChild(name, true)
    
    if towerExists then
        if towerExists.Config.Price.Value <= player.Cash.Value then
            if previous or  player.PlacedTowers.Value < maxTowers then
                return true
            else 
                warn("Player has reached max limit")        
            end
        else
            warn("Player can not afford the tower")
        end
    else 
        warn("The requested tower does not exist")
    end

    return false
end
requestTowerFunction.OnServerInvoke = tower.CheckSpawn
return tower

this is the invoke in the local script

gui.Selection.Action.Upgrade.Activated:Connect(function()
    if selectedTower then
        local upgradeTower = selectedTower.Config.Upgrade.Value
        print(upgradeTower.Name ,selectedTower.HumanoidRootPart, selectedTower)
        local upgradeSuccess = SpawnTowerFunction:InvokeServer(upgradeTower.Name, selectedTower.HumanoidRootPart.CFrame, selectedTower)
        if upgradeSuccess then
            selectedTower = upgradeSuccess
            toggleTowerInfo()
        end
    end
end)

this is the error "Archer is not a valid member of Folder "ReplicatedStorage.Towers""

it occurs at line 182 which is this

local towerExists = ReplicatedStorage.Towers[name]:FindFirstChild(name, true)

and

line 206 in the local script which is this

local upgradeSuccess = SpawnTowerFunction:InvokeServer(upgradeTower.Name, selectedTower.HumanoidRootPart.CFrame, selectedTower)

all the variables, everything is correct

the only problem is

I HAVE NO IDEA WHERE THE HELL IT IS PUT "REPLICATEDSTORAGE.TOWERS"

[red charm]

Remove [name] here

[strong cove]

but that just

results in errors

because

you need to find the name

folder

then the name

I know

that it is because of [name]

[red charm]

Show how towers are stored

[strong cove]

i tried another variable

[red charm]

Then why do you need the [name]

Explain it

[strong cove]

because

inside the folder

is the model

with its viewportframe

the scripts access the model

but

when it comes

[red charm]

But

[strong cove]

to accessing upgrades

it doesnt recognize the upgrades folder

if i put it in towers

errors again

[red charm]

If there is no folder [name] will error

[strong cove]

hm

how would I get it then

??

[red charm]

:FindFirstChild(name)

[strong cove]

hm

[red charm]

If there is no folder it will return nil

First find the folder of a tower, check if it exists and then do whatever you want

[strong cove]

i just tried something

it checks if the folder exists first

huh

oh wait

uh

it looked for archer

inside archer

hm

[junior sandal]

local towerExists = ReplicatedStorage.Towers[name]:FindFirstChild(name, true)

In theory, what you are doing in this line is literally go to towers, access Name folder, and then, again, find for another object with it's name, recursively, why?

The error you are getting is probably because, as you are accessing the object straight by it's index, you get the error, in this case "Archer", when it doesn't exist

If you are trying to find "Archer", and you know it is in the first level, inside "Towers", the best option would be to access by it's name as you have done, but that may lead to errors when by unknown reasons, the object gets removed or renamed, failing and halting the script.

It's best to use FindFirstChild, or pcall the access

[red charm]

local Towers = ReplicatedStorage.Towers


local TowerFolder = Towers:FindFirstChild(name)
if TowerFolder then
-- tower exists
else
-- tower not exists
end

[junior sandal]

+1

[deft raft]

^