If you want trigger the OnComplete event, only when all files are uploaded, here you have the snippet:
delphi code
procedure TIWForm3.IWAppFormCreate(Sender: TObject);
begin
IWCGJQFileUpload1.JQFileUploadOptions.OnComplete.Condition:= Format('(%s_JQObj._uploadingList._filelist.length == 0)',[IWCGJQFileUpload1.JQHTMLName]);
end;
Best Regards.