Set rule to key values in Filament

I have a description column in database which is JSON, with KeyValue component I add data, but the problem is that I could not implement the rule for key values, I want each key and value be between 3 and 30 characters.

KeyValue::make('description')
            ->label('description')
            ->keyLabel('key')
            ->valueLabel('value')
            ->addActionLabel(__('Add Feature'))
            ->default([]),

You can solve this first creating a custom Rule, something like the following:

<?php
 
namespace App\Rules;
 
use Closure;
use Illuminate\Contracts\Validation\ValidationRule;
 
class JsonKeyValueLength implements ValidationRule
{
    /**
     * Run the validation rule.
     */
    public function validate(string $attribute, mixed $value, Closure $fail): void
    {
        foreach ($value as $key => $val) {
            if (strlen($key) < 3 || strlen($key) > 30 || strlen($val) < 3 || strlen($val) > 30) {
                $fail('The length of keys and values should be between 3 and 30.');
            }
        }
        
    }
}

Then, after creating this rule, you can use it by chaining the rules method it on the KeyValue component as following:

KeyValue::make('description')
            ->rules([new \App\Rules\JsonKeyValueLength()])
            ->label('description')
            ->keyLabel('key')
            ->valueLabel('value')
            ->addActionLabel(__('Add Feature'))
            ->default([]),