script only damages one player at a time

[fiery spoke]

Can u try this

while wait(2) do
    local hitbox = workspace:GetPartBoundsInBox(script.Parent.CFrame, Vector3.new(8, 6, 9))

    for _, v in pairs(hitbox) do
        if v.Parent then
            if v:IsA("BasePart") and v.Parent:IsA("Model") then
                if v.Parent:FindFirstChildOfClass("Humanoid") and v.Parent.PrimaryPart then
                    local hit = {}
                    if not hit[v.Parent] then
                        hit[v.Parent] = true
                        local distance = (v.Parent.PrimaryPart.Position - workspace.hitboxpart.Position).Magnitude

                        if 12 > distance then
                            for i = 1, 10 do
                                wait(0.1)
                                v.Parent:FindFirstChildOfClass("Humanoid"):TakeDamage(1.5)
                            end
                        end
                    end
                end
            end
        end
    end
end

does the dummies have the same name?

or the same parent

changes the name to maybe dummy1 and dummy2

something like that

whats the v parent?

leave the name like that, Dummy1 and Dummy2

And try this

while wait(2) do
    local hitbox = workspace:GetPartBoundsInBox(script.Parent.CFrame, Vector3.new(8, 6, 9))

    for _, v in pairs(hitbox) do
        if v.Parent then
            if v:IsA("BasePart") and v.Parent:IsA("Model") then
                if v.Parent:FindFirstChildOfClass("Humanoid") and v.Parent.PrimaryPart then
                    local hit = {}
                    if not hit[v.Parent.Name] then
                        hit[v.Parent.Name] = true
                        local distance = (v.Parent.PrimaryPart.Position - workspace.hitboxpart.Position).Magnitude

                        if 12 > distance then
                            for i = 1, 10 do
                                wait(0.1)
                                v.Parent:FindFirstChildOfClass("Humanoid"):TakeDamage(1.5)
                            end
                        end
                    end
                end
            end
        end
    end
end

[quiet rune]

** You are now Level 1! **

[fiery spoke]

ok, put a print under the hit[v.Parent.Name] = true, like this

print(v.Parent.Name)

and send the output

then the sended script would work, thats weird

x6 ?

make sure everythings good

wait, put a print like this

print(hit)

under
hit[v.Parent.Name] = true

and send output

open the table please, i cant see.

only dumm1 becomes true?

alright thats easy to fix

look

pass the script

to explain to you how to fix it, i dont have it.

try this

while wait(2) do
    local hitbox = workspace:GetPartBoundsInBox(script.Parent.CFrame, Vector3.new(8, 6, 9))
    local hit = {}

    for _, v in pairs(hitbox) do
        if v.Parent then
            if v:IsA("BasePart") and v.Parent:IsA("Model") then
                if v.Parent:FindFirstChildOfClass("Humanoid") and v.Parent.PrimaryPart then
                    if not hit[v.Parent.Name] then
                        hit[v.Parent.Name] = true
                        local distance = (v.Parent.PrimaryPart.Position - workspace.hitboxpart.Position).Magnitude

                        if 12 > distance then
                            coroutine.wrap(function()
                                for i = 1, 10 do
                                    wait(0.1)
                                    v.Parent:FindFirstChildOfClass("Humanoid"):TakeDamage(1.5)
                                end
                            end)()
                        end
                    end
                end
            end
        end
    end
end

coroutine.wrap create a function for only that v

have a good day!