Need to edit VB code to transfer data from Checkbox Content Controls in Word to Excel

HI,
can you help me and write how I can modify this code to import checkbox content controls (word content controls) from word to excel.
I am beginner in vba and I can’t find a solution to my problem.
I know that the code could easily be modified to do that but I have with this problem and my codes don't work.
I would appreciate it if you could reply to my post.

Sub GetFormData()
'Note: this code requires a reference to the Word object model

Application.ScreenUpdating = False


Dim wdApp As New Word.Application
Dim wdDoc As Word.Document
Dim CCtrl As Word.ContentControl
Dim strFolder As String, strFile As String
Dim WkSht As Worksheet, i As Long, j As Long

strFolder = GetFolder

If strFolder = "" Then Exit Sub

Set WkSht = ActiveSheet
i = WkSht.Cells(WkSht.Rows.Count, 1).End(xlUp).Row
strFile = Dir(strFolder & "\*.docx", vbNormal)

While strFile <> ""
i = i + 1
Set wdDoc = wdApp.Documents.Open(Filename:=strFolder & "\" & strFile, AddToRecentFiles:=False, Visible:=False)
With wdDoc
j = 0
For Each CCtrl In .ContentControls
j = j + 1
WkSht.Cells(i, j) = CCtrl.Range.Text
Next
End With
wdDoc.Close SaveChanges:=False
strFile = Dir()
Wend
wdApp.Quit
Set wdDoc = Nothing: Set wdApp = Nothing: Set WkSht = Nothing
Application.ScreenUpdating = True
End Sub