`vtupress_country_array`
Add supported countries or modify currencies.
**Before:** Array containing `[‘NG’ => [‘currency’ => ‘NGN’, ‘code’ => ‘+234’, ‘airtime’ => [‘mtn’, ‘glo’…]]]`
**Hook Example:**
```php
add_filter('vtupress_country_array', function($countries) {
// Make sure to match the exact schema used in VTUPress config/country.json
$countries['ghana'] = [
'iso' => 'GH',
'slogan' => 'The Black Star of Africa',
'status' => true, // Set to true to enable
'name' => 'Ghanaian Cedi',
'currency' => 'GHS',
'symbol' => '₵',
'code' => '+233',
'airtime' => ['mtn', 'vodafone', 'airtel', 'tigo'],
'data' => ['mtn', 'vodafone', 'airtel', 'tigo'],
// ... add cable, bill, etc.
];
return $countries;
});
```**After:** Array includes the full Ghana object with available service networks.