The Save Place API doesn't work, help?

This was added to the brick and tested but didn't work.

local Trigger = script.Parent

function debounce(func)
    local isRunning = false
    return function(...)
        if not isRunning then
            isRunning = true
            func(...)
            isRunning = false
        end
    end
end

function getPlayer(Part)
    local Humanoid = Part.Parent:FindFirstChild('Humanoid')
    if (Humanoid ~= nil) then
        local Character = Humanoid.Parent
        if (Character ~= nil) then
            return game:GetService('Players'):GetPlayerFromCharacter(Character)     
        end
    end
end

function _savePlace(player)
    game:GetService(“AssetService”):SavePlaceAsync()
end
local savePlace = debounce(_savePlace)

function onTouch(Source)
    local player = getPlayer(Source)    
    if player then
        if player.userId > 0 then   
            local success, error = ypcall(function() savePlace(player) end)
        end     
    end 
end

Trigger.Touched:connect(onTouch)

Do I have any problems?