Message box isnt appearing after it injects

code:

Private Sub RadioButton2_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadioButton2.CheckedChanged
If IO.File.Exists(test.FileName) Then
Dim TargetProcess As Process() = Process.GetProcesses
If TargetProcess.Length = 0 Then
Me.Label1.Text = ("Waiting for" + TextBox2.Text + "crossfire")

Else
Timer1.Start()
Me.Label1.Text = "Injection Completed"
Call Inject()
End If
Else

End If
End Sub

now the edit

Private Sub RadioButton2_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadioButton2.CheckedChanged
If IO.File.Exists(test.FileName) Then
Dim TargetProcess As Process() = Process.GetProcesses
If TargetProcess.Length = 0 Then
Me.Label1.Text = ("Waiting for" + TextBox2.Text + "crossfire")

Else
Timer1.Start()
Me.Label1.Text = MessageBox.Show("not working :(", "help?")
Call Inject()
End If
Else

End If
End Sub

it shud be something like that i think i dunno its my 3rd day with VB