Create a special TextBox

It's being rather crazy to create an specialized input system that only takes numbers and show them on the TextBox.

As you can see in this image, I've coded this:

<img src="https://www.dropbox.com/s/2hcwoji8p9enbf3/code.png" border="0">

dropbox.com/s/2hcwoji8p9enbf3/code.png

And the project is:

input.capx

dropbox.com/s/nx1w9zls9j5o8k5/input.capx]input.capx

But no decimals are shown in the textbox.

(Sorry for the inconvenience, but the system doesn't shows images by now)

Have you seen this topic?

Yes, and I have made a new version of my input Box, But still needs improvement:

The idea is show in the project:

https://www.dropbox.com/s/o7xvlptfyuyrf1v/textbox.capx

And the code is there:

image of the code

Any idea on how it doesn't work?