Moving a label on the page

[Armanyes]

I created these Functions to move a label:

function Forward(labelName)
    local currentPos = Label.GetPos(labelName);
    local newPos = currentPos.X + 10;
    for lab = currentPos.X, newPos, 0.150 do
     Label.SetPos(labelName, lab, currentPos.Y);
    end
end

function Backward(labelName)
    local currentPos = Label.GetPos(labelName);
    local newPos = currentPos.X - 10;
    for lab = currentPos.X, newPos, -0.150 do
     Label.SetPos(labelName, lab, currentPos.Y);
    end
end

and it works fine but sometimes when cursor moves outside the project it is not working properly.

Is there a solution or a better way to do it ?