How can I pause a VBA macro to allow a user to select a shape and then resume after a shape is selected?

Greetings all,

I'm working on a macro in VBA. During the macro, I have a message pop-up requesting the user to select an item that needs to be updated. What code could I use that would pause the macro (and not a timer) and then resume after the usre selects a single item?

I've used the code below to pause other macros which required user input for coordinates, however this code won't allow a selection process. Any thoughts? 

CODE:

Dim doc As Document, retval1 As Long
Dim x1 As Double, y1 As Double, shift1 As Long
Set doc = ActiveDocument
doc.Unit = cdrMillimeter
retval1 = doc.GetUserClick(x1, y1, shift1, 10, True, cdrCursorPick)

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  •  Dim x As Double, y As Double
    Dim Shift As Long
    Dim b As Boolean
    Dim s As Shape
    Dim cr As Long, cg As Long, cb As Long
    b = False
    While Not b // loop until b get true
    b = ActiveDocument.GetUserClick(x, y, Shift, 10, False, cdrCursorEyeDrop)
    If Not b Then
    Set s = ActiveLayer.CreateEllipse(x - 0.1, y - 0.1, x + 0.1, y + 0.1)
    cr = 0
    cg = 0
    cb = 0
    If (Shift And 1) <> 0 Then cr = 255 ' Shift depressed - Add Red
    If (Shift And 2) <> 0 Then cg = 255 ' Ctrl depressed - Add Green
    If (Shift And 4) <> 0 Then cb = 255 ' Alt depressed - Add Blue
    s.Fill.UniformColor.RGBAssign cr, cg, cb
    End If
    Wend
    End Sub
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