pageSize for graphql api

Hello, I have a python script which queries for invoices and I noticed that I can only get 50 results, even if i increase the pageSize variable beyond that, I have not seen any documentation (yet) about a limit for the query for the invoices.
Note: the pageSize variable works for smaller values, I.e. 4 or 10 and it will limit the variables as expected
is this expected behavior, or is it paginating and I just need to change the page variable?
here is the gist of the graphql query
query($id: ID!) { business(id: $id) { invoices(pageSize: 75) { edges { node { id } } } }
Thanks in advance
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