Android Question Best simple parsing using Regex or maybe it's not the best way

Test("t1r3")
Test("t11r61")

Private Sub Test(s As String)    
    Dim n1, n2 As Int
    s = s.Replace("t", "")
    s = s.Replace("r", " ")
    Dim arr() As String = Regex.Split(" ", s)
    If arr <> Null And arr.Length = 2 And IsNumber(arr(0)) And IsNumber(arr(1)) Then
        n1 = arr(0)            
        n2 = arr(1)
    End If
    Log(n1 & " " & n2)
End Sub

Private Sub ParseString (s As String) As Double()
    Dim res(2) As Double
    Dim m As Matcher = Regex.Matcher("\d+\.?\d*", s)
    Dim c As Int
    Do While m.Find
        res(c) = m.Match
        c = c + 1
        If c = 2 Then Exit
    Loop
    Return res
End Sub

    Dim res() As String = Array As String(s.substring2(1, s.IndexOf("r")), s.substring(s.IndexOf("r") + 1))
    Log(res(0) & TAB & res(1))