Regular expression pattern doesn't work

General
1

Hello

Could you please tell me how to set the correct text attribute template that would control the input of numbers in the text field?

I tried everything, but the system constantly gives an error “follow the specified format”

2

What is your regular expression ?

3

/^\d+$/

4

Please try it without separators, for example:

[0-9]+

This would require one or more digits.