why wont this work? returns a empty array.
```php
function fn_get_wholesale_options($product_id)
{
global $db_tables;
$wholesale_options = db_get_array(“SELECT $db_tables[product_option_variants].modifier, $db_tables[product_option_variants].modifier_type FROM $db_tables[product_option_variants] WHERE $db_tables[product_option_variants].option_id=‘$product_id’ ORDER BY variant_id”);
return $wholesale_options ;
}
```
i know for a fact that product_id == 29780