The following should help. The Excel macro assumes a two column worksheet with a header row. Column 1 has the titles of the content controls in the named document, column 2 has the values associated with those controls.
The macro runs through each row in column 1 and populates any matching control titles in that column with the associated values from column 2. You can run the macro from a button on the worksheet, or from a button on the ribbon or QAT.
Code:
Sub PopulateCCs()
Const sPath As String = "c:\path\document name.docx" 'the full path of the document
Dim oCC As Object
Dim wdApp As Object
Dim wdDoc As Object
Dim LastRow As Long, lngIndex As Long
Dim xlSheet As Worksheet
Dim sValue As String
On Error Resume Next
Set wdApp = GetObject(, "Word.Application")
If Err Then
Set wdApp = CreateObject("Word.Application")
End If
On Error GoTo 0
ActiveWorkbook.Save
Set wdDoc = wdApp.Documents.Open(sPath)
wdApp.Visible = True
Set xlSheet = ActiveSheet
With xlSheet
LastRow = .Cells(.Rows.Count, "A").End(xlUp).Row
For lngIndex = 2 To LastRow
For Each oCC In wdDoc.ContentControls
If UCase(oCC.Title) = UCase(.Cells(lngIndex, 1)) Then
oCC.Range.Text = .Cells(lngIndex, 2)
Exit For
End If
Next oCC
Next lngIndex
End With
lbl_Exit:
Set wdApp = Nothing
Set wdDoc = Nothing
Set oCC = Nothing
Exit Sub
End Sub