Why does my module script always return true?

Right, so I'm trying to make swords here. As you can see from the title, I'm using module scripts to deal with all the logic or whatever. Now, I have a region3 defined in my module script, and if a player is in that region3 I want them not to take damage. Now, CFrames, Region3s, all that kind of stuff has always been a weak side to me, so I found online some code for that and I modified it a bit to match what I wanted. Now with that, I tested the thing on a local server and whether I was in the region or not it would still kill the player. I need help with that, thanks.

This is my function inside of the module script:

function module.onTouchDamage(h)
    local afkregion = Region3.new(game.Workspace.afkregion1.Position, game.Workspace.afkregion2.Position)
    local isPlayerInRegion

    if h.Parent:FindFirstChild("Humanoid") then

        local char = h.Parent 
        local whitelist = char:GetChildren()
        ----------------------------------------

        local partsInRegion = game.Workspace:FindPartsInRegion3WithWhiteList(afkregion, whitelist)

        if #partsInRegion >= 1 then

            isPlayerInRegion = true
            print(#partsInRegion)
            print(partsInRegion[1].Name)

        else

            isPlayerInRegion = false

        end

        ----------------------------------------

        if isPlayerInRegion == false and char:WaitForChild("CanTakeDamage").Value == true then

            return true     

        else

            return false

        end 
    end 
end

This is a part my of script inside the sword.

sword.Touched:Connect(function(h)

    if h.Parent:FindFirstChild("Humanoid")  then

        local char = h.Parent
        local player = sword.Parent.Parent.Parent --Ik i used 4 parents in a row but you get it

        if char.Name ~= player.Name then

            local doDamage = module.onTouchDamage(h)

            print(doDamage)

            if doDamage == true then

                char.Humanoid:TakeDamage(dmg.Value)

            end
        end
    end 
end)

All variables are defined