Android Question Fetching Currency Exchange Rates with APILayer

Sub Activity_Create(FirstTime As Boolean)
    Activity.LoadLayout("frmSetup")
    DownloadRates("https://api.apilayer.com/fixer/latest?apikey=I5prDI8J--------------8Q2i32")

End Sub

Sub Activity_Resume

End Sub

Sub Activity_Pause (UserClosed As Boolean)

End Sub


Sub DownloadRates(Link As String)
    Dim job As HttpJob
    job.Initialize("", Me)
    job.Download(Link)
    Wait For (job) JobDone(job As HttpJob)
    If job.Success Then
        Log(job.GetString)
        ToastMessageShow(job.GetString,True)
        Dim parser As JSONParser
        parser.Initialize(job.GetString)
        Dim root As Map = parser.NextObject
        Dim date As String = root.Get("date")
        Dim rates As Map = root.Get("rates")
        Dim SGD As Double = rates.Get("SGD") 
        Dim MYR As Double = rates.Get("MYR")
        Dim GBP As Double = rates.Get("GBP")   
        Dim AUD As String =root.Get("base")   
        Log($"The ${AUD} is worth ${SGD}  Singapore Dollar on ${date}"$)   
      
    Else
        Log("Error: " & job.ErrorMessage)
        ToastMessageShow("Error: " & job.ErrorMessage, True)
    End If
    job.Release
End Sub