I want the textbox to accept only numeric input

[dora_paz]

You could always use regex extension by @Kevinkun to validate numbers for example only integers or even only positives numbers.
For example this will accept only positive integer numbers in calculations otherwise it will return 0 in textbox

[Anke]

@Karim_Alkhabbaz

But this keyboard shows - , & space which if you use them alone without any number, it result in application failure and close it.

Please post a screenshot of the "application failure".

isNumber always returs the correct booleans:

[Karim_Alkhabbaz]

Hi
This is the failure message:

[Anke]

@Karim_Alkhabbaz

This is the failure message:

Show the blocks (like I did).

[Karim_Alkhabbaz]

Hi

This is the result if I add the - character with out any number with it:

and this if I add numbers:

[dora_paz]

Try this and see if it works for you
numbers_only.aia (7.8 KB)

[Wes_Savage]

@Karim_Alkhabbaz

Thanks for the nice keyboard.

Great keyboard and easy to build but only positive numbers out

[Wes_Savage]

@Karim_Alkhabbaz

I did not mean by & as a character in the keyboard

Same keyboard I get .. the space bar is disabled and "-" can easily be filtered out as I already gave blocks for

[Anke]

@Karim_Alkhabbaz

This is the result if I add the - character with out any number with it:

So where is the problem?

[TIMAI2]

@Wes_Savage

Great keyboard and easy to build but only positive numbers out

Easy enough to add a - key, but not in the original OP's request....

[Wes_Savage]

@TIMAI2

Easy enough to add a - key, but not in the original OP's request....

Agreed but maybe I misread? I thought he was ONLY concerned with "-" in the case where ONLY "-" was entered as the only character .. appeared to me -1 etc was ok

I like the keyboard and built one very similar to lookup telephone prefixes a couple months ago

[Wes_Savage]

@dora_paz

You could always use regex extension by @Kevinkun

Looks like something I could use. Wish I could read ummmm Korean?

[dora_paz]

No need to know korean, you can always translate page to english

Also have a look at

Regular expression

RegExr: Learn, Build, & Test RegEx

[Wes_Savage]

Thanks MUCH. Mucho Gracias! Yes I am familiar with RegEX algorthims and have used such techniques in years past in other languages. So fast and so easy for handling large lists.

@dora_paz where is the translate button?

[Wes_Savage]

@TIMAI2

original OP's request

Ok still newbie .. my jargonese dictionary doesn't have OP in it yet?

[ChrisWard]

It means Original Poster, but since the original query is called a Topic....

[Wes_Savage]

Thank you @ChrisWard

[Kevinkun]

@Wes_Savage

where is the translate button

If you are using Chrome browser, just right click and you will find the entrance how to translate the web.

ps:
The image already explain everything, do you really need the English translation?
and the website is in Chinese, not Korean.

[Wes_Savage]

谢谢, Xièxiè

I have firefox and don't see a translator.