How to start a local script function from a module script?

I'm making a stun system in my game, and I have run into a problem with starting a function in a local script from a module script.

The first part probably isn't all that important, its just a remote event sending into the module script. The problem is on the module script. code :

function Attacking.Kick(HumanoidRootPart)

    print("got the startup function")
    --  script.Parent.PunchDamage.Punch()

    if(HumanoidRootPart == nil) then
        return
    end

    local overlapParams = OverlapParams.new()
    local hitContents = workspace:GetPartBoundsInBox(HumanoidRootPart.CFrame*CFrame.new(0, 0, -5),Vector3.new(5, 6, 4), overlapParams)      

    local hitList = {}
    for i,v in pairs(hitContents) do
        local e_character = v.Parent
        local c_humanoid = e_character:FindFirstChild("Humanoid")

        if(c_humanoid) then
            if not hitList[e_character] then
                hitList[e_character] = true
                local PunchSound = script.Parent.punch5
                wait(0.15)
                PunchSound:Play()
                c_humanoid:TakeDamage(50)
                --heres the problem
                c_humanoid.FightManager.SentStun(1.5)
            end
        end
    end     


end

The main reason why I do this is because of a variable of the stun I need to set to prevent the player from using any move sets.