MS WORD VBA Find Replace text using a variable

Question

I have a variable (strLastname) that I use to send a string to a bookmark. That works well. I also wish to use that variable to replace temporary text "Name>" in a long document.

This is what I have now.

  Sub cmdOK_Click()
    Dim strLastname As String   ' from dialogue box "BoxLastname" field
    strLastname = BoxLastname.Value
....
  End sub

The macro that does not work:

Sub ClientName()

Selection.Find.ClearFormatting
Selection.Find.Replacement.ClearFormatting
With Selection.Find
    .Text = "Name>"
    .Replacement.Text = strLastname??????

             'Selection.TypeText (strLastname) ????
              'How to use the variable from the Dialogue Box - strLastname????

     End With
  Selection.Find.Execute Replace:=wdReplaceAll
End Sub

I tried .Replacement.Text = strLastname and .Replacement.Text = BoxLastname.Value but no one work.

Solution

A quick search from google finds this link http://msdn.microsoft.com/en-us/library/office/aa211953(v=office.11).aspx

I tried this on a simple document to find and replace text

With ActiveDocument.Content.Find
    .Forward = True
    .Wrap = wdFindStop
    .Execute FindText:="Text", ReplaceWith:="Tax", Replace:=wdReplaceAll

That replaces all occurence of Text with Tax .... is this what you're after ??

Works with variables too

OldWord = "VAT"
NewWord = "Text"

With ActiveDocument.Content.Find
    .Forward = True
    .Wrap = wdFindStop
    .Execute FindText:=OldWord, ReplaceWith:=NewWord, Replace:=wdReplaceAll, Matchcase:=True
End With

Add , Matchcase:=True at end to fix case problem (modified now above)

3rd Modification results in this

Dim strLastname As String   ' from dialogue box "BoxLastname" field
strLastname = BoxLastname.Value

OldWord = "Name"
NewWord = strLastName

With ActiveDocument.Content.Find
    .Forward = True
    .Wrap = wdFindStop
    .Execute FindText:=OldWord, ReplaceWith:=NewWord, Replace:=wdReplaceAll, Matchcase:=True
End With