how to create a query that paginates?

Pls check this code:

let
Pagination = List.Skip(List.Generate( () => [Last_Key = "20170404130408053410572", Counter=0], // Start Value
   		each  [Last_Key] <> null and [Last_Key] <> "", // Condition under which the next execution will happen
   		each [ Last_Key = try if [Counter]<=1 then "20170404130408053410572" else [WebCall][lastKey] otherwise null,// determine the LastKey for the next execution
                       WebCall = Json.Document(Web.Contents("https://apiv2.clickmeter.com/datapoints/8697350/hits?timeframe=last30&limit=10&offset="&Last_Key&"%408693934&authKey=fde74f69-ea93-411f-96b2-5eb9cb4c0993")), // retrieve results per call
    		       Counter = [Counter]+1// internal counter
                      ],
   		each [WebCall]
),1),
    #"Converted to Table" = Table.FromList(Pagination, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
    #"Expanded Column3" = Table.ExpandRecordColumn(#"Converted to Table", "Column1", {"hits"}, {"hits"}),
    #"Expanded hits2" = Table.ExpandListColumn(#"Expanded Column3", "hits"),
    #"Expanded hits3" = Table.ExpandRecordColumn(#"Expanded hits2", "hits", {"id", "accessTime", "entity", "browser", "os", "location", "conversions", "type", "ip", "isSpider", "isUnique", "trackedParameters"}, {"id", "accessTime", "entity", "browser", "os", "location", "conversions", "type", "ip", "isSpider", "isUnique", "trackedParameters"})
in
    #"Expanded hits3"