vb.net: Reference to a non-shared member requires an object reference occurs with random.next

I am attempting to randomly generate a number between (and including) 1 and 4 to randomly select an object (in this case an asteroid) and tells it to move to a location and unhide (spawn).

If Globals.pathA = True Then
        Globals.astroidspawn_a1 = Random.Next(1, 4)

And then

If Globals.astroidspawn_a1 = 1 Then
            astroid1.Location = New Point(800, 55)
            astroid1.Visible = True
        End If

This second section repeats multiple times resulting in the spawning asteroids.

The code "Random.Next" is seen as a code error, stating "Reference to a non-shared member requires an object reference".