Sage 200 API Requests

I am trying to use the API. I have done requests to see if a customer exist and have done so without issues. I am trying to list the transactions now, using the following url:

http://<IP>:5000/freedom.core/<Database-Name>/SDK/Rest/CustomerTransactionListByAccountCode?orderby=Date&pagesize=1000&pagenumber=1&AccountCode=4

But when I run this all I get in return is 

I have seen that the info page says that this request lists by accountcode, but the documentation does not state where to use the accountcode as parameter, so I am not sure if my request is now wrong or is there some other problem.