Android Question on this code there is a mistake?

Sub imageview_Click
'    im = Sender
'    anim.InitializeAlpha("animAlpha" , 1 , 0.7 )
'    anim.Duration = 600
'    anim.RepeatCount = -1
'    anim.Start(im)

For Each v As View In Activity.GetAllViewsRecursive
        If v Is ImageView Then
            Dim iv As ImageView
            iv = Sender
            anim.InitializeAlpha("animAlpha" , 1 , 0.7 )
            anim.Duration = 600
            anim.RepeatCount = -1
            anim.Start(iv)
            Log("Imageveiw " & iv.Tag)
        Else
            anim.Stop(iv)
        End If
    Next

End Sub

Sub Globals
   Private LastImv As ImageView
   Private Label1 As Label
   Private anim As Animation
End Sub

Sub Activity_Create(FirstTime As Boolean)
   For i = 1 To 4
     Private imv As ImageView
     imv.Initialize("ImageViews")
     imv.Tag = i+1   
     imv.Bitmap = LoadBitmap(File.DirAssets,"5.png")
     Activity.AddView(imv,i*20%x ,2%y,18%x,14%y)     
   Next
   Label1.Initialize("Label1")
   Activity.AddView(Label1, 20%x, 20%y, 60%x, 20%y)
   Label1.Color = Colors.White
   Label1.TextColor = Colors.Black
   Label1.TextSize = 22
End Sub

Sub Activity_Resume

End Sub

Sub Activity_Pause (UserClosed As Boolean)

End Sub

Sub ImageViews_Click
   If LastImv.IsInitialized Then
     anim.Stop(LastImv)
   End If
   
   LastImv = Sender
   anim.InitializeAlpha("animAlpha" , 1 , 0.7 )
   anim.Duration = 600
   anim.RepeatCount = -1
   anim.Start(LastImv)
   Label1.Text = "yes" & " - "& LastImv.Tag
   Label1.Color = Colors.Green
End Sub