Bug? IF-Then is not executed when compare two Map values

Dim LocationData As Map
LocationData = ListLocations.Get(i)

.....

Dim svDevices As ScrollView = locationPanel.GetView(5)
JSON_DEVICES.Initialize(job.GetString)                              
Dim MapDevices As Map = JSON_DEVICES.NextObject
Dim m As Map = MapDevices.Get("data")
Dim ListDevices As List = m.Get("devices")
Dim lstPos As Int = 0
                           
    For j = 0 To ListDevices.Size - 1
                               
         m = ListDevices.Get(j)
                               
         If LocationData.Get("id") = m.Get("id")  Then

(Int)myStringValue

or

myStringValue.toInt32

Sub asString(s As String) As String
    Return s
End Sub

If (asString(LocationData.Get("id"))==asString(m.Get("id"))) Then
'.....