Public Function CheckBIG(strSource As String) As Boolean

Dim idx As Long

Dim ByteTemp() As Byte

CheckBIG = False

For idx = 1 To Len(strSource)

ByteTemp = StrConv(Mid(strSource, idx, 1), vbFromUnicode)

If UBound(ByteTemp) > 0 Then

If (ByteTemp(1) >= 64) And (ByteTemp(1) <= 126) Then

CheckBIG = True

Exit For

End If

End If

Next idx

End Function