iOS Question JSON differences B4i B4A

Sub Parser_JSON
  Dim JSON As JSONParser
  Dim Map1 As Map
  Dim filas As Int

  Map1.Initialize
  If HTML1.Contains("name") Then
    JSON.Initialize(HTML1)

    filas = JSON.Nextvalue '<--- the answer to the first question
    For i = 0 To filas -1
      Map1 = JSON.NextObject    
      listaValores(i).name = Map1.Get("name")
    Next

Sub Parser_JSON
  Dim JSON As JSONParser
  Dim Map1 As Map
  Dim list1 As List
  Dim i As Int

  Map1.Initialize
  If HTML1.Contains("name") Then '<------ optional or more complex check
    JSON.Initialize(HTML1)
    list1 = JSON.NextObject

    For i = 0 To list1.Size -1 '<------------ no previous number of object needed
      Map1 = list1.Get(i)
      listaValores(i).name = Map1.Get("name")
    Next