String taken from textlabel not doing arithmetic?

I have two buttons one and two. When I press one plus two it will show "1+2" in my textlabel and what I will do is take the string from the textlabel and try to do arithmetic in my serverscript but it doesn't work please help

the variable number is the textlabel.text

game.ReplicatedStorage.RemoteEvent.OnServerEvent:Connect(function(player, name, name2, number)
    local value = tonumber(number)
    if name == "Equals" then
        print(value)
    end
end)