change character in all text fields - ms-access

Question

I need your help. I woulod like to change one char by another but in all database and i have several table and fields. So i'm building a function in VB but that change nothing and i have no error. I think that my condition is false but i don't see how to correct it :/
Public Sub updateField()
Dim db As DAO.Database, td As DAO.TableDef, field As DAO.field
Dim rs As DAO.Recordset, sSQL As String, sData As String
Set db = CurrentDb
Change = "\"""
replaced = """"
'each table in db
For Each tbd In db.TableDefs
'each field in table
For Each fld In tbd.Fields
'check if String Data have my character
If InStr(1, fld.Name, Change) Then
sSQL = "UPDATE " & tbd.Name & " SET " & fld.Name & " = replace([" & fld.Name & "], " & Change & ", " & replaced & ")"
db.Execute sSQL
End If
Next
Next
End Sub
EDIT :
I finally find what's wrong. if some people are interested :
Set db = CurrentDb
Change = "\"""
replaced = """"
'each table in db
For Each tbd In db.TableDefs
'each field in table
For Each fld In tbd.Fields
If Left(tbd.Name, 4) <> "MSys" And Left(tbd.Name, 4) <> "~TMP" Then
If fld.Type = dbText Or fld.Type = dbMemo Then
sSQL = "UPDATE " & tbd.Name & " SET " & fld.Name & " = replace([" & fld.Name & "],'" & Chr(92) + Chr(34) & "','" & Chr(34) & "')"
db.Execute sSQL
'Debug.Print (sSQL)
End If
End If
Next
Next
Thx for your help guys ;)

Answer 1

If it should help there my solution :
Public Sub updateField()
Dim db As DAO.Database, td As DAO.TableDef, field As DAO.field
Dim rs As DAO.Recordset, sSQL As String, sData As String, change As String, replace As String
change = "\'"
replace = "'"
' simple quote = 39
' doulbe quote = 34
' antislash = 92
' retour chariot = 13
' n = 110
' r = 114
Set db = CurrentDb
'each table in db
For Each tbd In db.TableDefs
'each field in table
For Each fld In tbd.Fields
If Left(tbd.Name, 4) <> "MSys" And Left(tbd.Name, 4) <> "~TMP" Then
If fld.Type = dbText Or fld.Type = dbMemo Then
' \r\n
'sSQL = "UPDATE " & tbd.Name & " SET [" & fld.Name & "] = replace([" & fld.Name & "],'\r\n','" & Chr(13) & Chr(10) & "');"
' \"
'sSQL = "UPDATE " & tbd.Name & " SET [" & fld.Name & "] = replace([" & fld.Name & "],'" & Chr(92) + Chr(34) & "','" & Chr(34) & "');"
'db.Execute sSQL
sSQL = "UPDATE " & tbd.Name & " SET [" & fld.Name & "] = replace([" & fld.Name & "],'\''','''');"
db.Execute sSQL
'Debug.Print (sSQL)
End If
End If
Next
Next
End Sub
That's works for me ;)