Iterate Over Dynamic API Pages With Power Query

I am currently having trouble iterating over dynamic API pages with Power Query. Each page only has 100 rows but I need to request all rows through API. To get all of the data I need to retrieve all IDs (next_batch_after_version) numbers (displays one ID per request). I have looked through https://datachant.com/2016/06/27/cursor-based-pagination-power-query/ but am a little confused on how to do this with a parameter instead of a URL.  The API uses a parameter ID called "next_batch_after_version" which is what I need to loop to get the next page(s). The URL looks like this: https://waysact.me/api/v4/pledges/next_batch?campaign_id=2732&schema_id=115&next_batch_after_version=[THIS_IS_WHAT_I_NEED_TO_LOOP] 

I attached the code below...any help is greatly appreciated!

This is the code I have now:

let
iterations = 10, // Number of iterations
Source = Json.Document(Web.Contents("https://waysact.me",

[RelativePath ="/api/v4/pledges/next_batch?campaign_id=2732&schema_id=115&next_batch_after_version="&(next_batch_after_version),
Headers=[Accept="application/json", Authorization="Bearer TOKEN*****GOES****HERE"]])),






FnGetOnePage =
(Source) as record =>
let
Source = Json.Document(Web.Contents(Source)),
data = try Source[data] otherwise null,
next = try Source[paging][next] otherwise null,
res = [Data=data, Next=next]
in
res,

GeneratedList =
List.Generate(
()=>[i=0, res = FnGetOnePage(Source)],
each [i]<iterations and [res][Data]<>null,
each [i=[i]+1, res = FnGetOnePage([res][Next])],
each [res][Data])
in
GeneratedList