negative value allowed to be choosen

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

Go to 'coupons'
Click on 'Add new'
See error
Expected behavior
only positive value shall be chosen

Screenshots
image

Desktop (please complete the following information):

OS: Windows
Browser Chrome
Version 122.0.6261.95 (Official Build) (64-bit)
Activity
