How to fix this problem (Cant explain it as a question)? [closed]

function announcement()
    local a = "Announcement                 "
    local h = game.ReplicatedStorage:WaitForChild("hour").Value

    if h >= 6 and h < 9 then
        a = a.."Go to the Canteen it is time for Breakfast"
    end
    if h >= 9 and h < 13 then
        a = a.."Free time activities are now open"
    end
    if h >= 13 and h < 18 then
        a = a.."Go to the Canteen it is Lunch Time"
    end
    if h >= 18 and h < 22 then
        a = a.."Indoor activities remain open"
    end
    if h >= 22 and h < 6 then
        a = a.."Go to your cells for lockdown"
    end

    return a
end

I use the following function as a RemoteFunction, it checks for a value called Hour which changes but the value a never changes for some reason.