How to submit multiple Terms from a list of checkboxes per custom taxonomy

Hi,

I have 4 custom taxonomies each with a set of terms. On the html form i have 4 lists of checkboxes. Each check box list is a taxonomy with each checkbox being the term. When the form is submitted the url structure is as follows this is correct https://testing.dev/vacancy/?country%5B%5D=australia&country%5B%5D=new-zealand but an exception is thrown in query.php on line 1758 in wp version 3.8. The following url works https://testing.dev/vacancy/?country=australia,new-zealand but how do you get a form to submit the checklist structure like this? Do I need to set the name=”” variable to something else other than name=”country[]” on my checkbox list.