How to set system for phone number, not to type more then 10 digit?

[MJ_BUNNY_T.V]

I create a login system and i want user not to type number less or greater then 10 digit …

[Mohamed_Tamer]

You can try this extension
https://community.appybuilder.com/t/textboxtools-extension-25usd-crowdfunded-now-free/21007
Also see here:

Limit the numbers of characters in a text box?

How can I limit the numbers of characters the user types on a text box?

[MJ_BUNNY_T.V]

i also want to give a condition
if ( text box phone number) is greater or less then ( 10.) ( digit ) then
notify ( please check the number ) …

is there any ( digit ) component

[Mohamed_Tamer]

@MJ_BUNNY_T.V

there any ( digit ) component

You can use text length property :

Like this:
If ( textbox1.length < 10)
Show alert with your text.