Search for all items with a CustomFieldValues set?

in Development
I am trying to do a query of our items where CustomFieldValues.CustomFieldValue.customFieldID = 3 (a specific field) and turn just the items with that field available?
Here is my query:
https://api.lightspeedapp.com/API/Account/{{accountID}}/Item.json?load_relations=["CustomFieldValues", "ItemShops"]&CustomFieldValues.CustomFieldValue.customFieldID=3
I am expecting only 1 item returned as I test, however it returns the whole database of items :(
Can this be done or do I need to redo the query?
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Answers
Never mine :) I fixed it!
@rsirota How did you fix this? :)