Magento 2 Rest API get all products with certain attribute_set_id

Question

I need to elaborate de URL that will bring all products with certain attribute_set_id through Magento 2 Rest api, and then change though the api the attribute_set_id of all those items. My problem comes on getting the URL to work to get the list of products. I get an empty array from the following code (and for sure attribute_set_id 14 exists and I have products with that attribute_set_id in my catalog).

$ch = curl_init($url."products?searchCriteria[page_size]=&
searchCriteria[filter_groups][0][filters][0][field]=attribute_set_id&
searchCriteria[filter_groups][0][filters][0][value]=14&
searchCriteria[filter_groups][0][filters][0][condition_type]=eq");

Any clue? Thanks

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SOLVED:

There where many errors in the initial post. Here is my solution.

$ch = curl_init($url."products?searchCriteria[filter_groups][0][filters][0][field]=attribute_set_id&
searchCriteria[filter_groups][0][filters][0][value]=14&searchCriteria[filter_groups][0][filters][0][condition_type]=eq");

It has some syntax corrections and did it ALL IN ONE LINE.