Excel Macro to Open 2nd Workbook if criteria met

Job ID: 35377101

Budget: $10 – $30 USD

I am using excel2016. I am trying to develop a macro that automatically opens up another workbook based on the value of a particular cell. Imagine we are conducting scenario 1, scores range from t1 through t4. If the assessed party receives t3 to t4, that is a failure and they need to do scenario 2. Immediately another workbook should pop up but the workbook should not contain any of the values the assessors entered
I need help creating a macro that both opens a file using and detects a change in specific cells.

This is what I have so far but it doesn't work.

Private Sub Worksheet_Change(ByVal Target As Range)

If Range("a2").Value = “t3” Or _

If Range("a2").Value = “t4” Then

Sub vba_open_dialog()

Dim strFile As String

strFile = Application.GetOpenFilename()

End If

End Sub