Adding values to Custom field - Access forbidden

Hi,

While there is no limit in HikaShop's code, there are two limits:
- the type of the field_values column in the database which will restrict the number of characters that can be used. This can change based on the version of HikaShop you had first installed on your website. But by default, even if you started with really old versions of HikaShop, it's still a few thousand values you should be able to enter in the custom field.
- Your server / PHP might limit the number of input fields that can be received by the website in one request:
stackoverflow.com/questions/9399315/how-...post-variable-in-php
stackoverflow.com/questions/12277231/max...ter-passed-in-a-post
With suhosin, that limit is apparently 1000 parameters. With 3 input fields by value, plus all the default input fields of the custom field form page, you can easily reach that limit with a couple hundred values.