Use An Excel VBA Variable That Contains A Field Name To Be Used In A DAO SQL "ALTER TABLE" Statement For An Access Database?

As you can see below in the code the " & tblName & " will work fine but instead of using the BankName (which the user cannot change because it is in the code) I would like to do the same as I did with the Table name and use a variable that gets its name from an excel spreadsheet rather that an actual name hard coded in a VBA module. I would like the variable field name entered in the Excel Spreadsheet by the user just like the table name is filled in by the user. The problem is getting the ADO SQL string ( cmd.CommandText = "ALTER TABLE " & tblName & " Add Column BankName Char(25)" ) to recognize that the value in the Variable " & fldName & " is the field name to be used.

Sub AddFieldToAccess()
Dim cnn As ADODB.Connection
Dim cmd As ADODB.Command

[code]....

'If I do this I end up with a field named BankName what I need is the name in the variable " & fldName & "

cmd.CommandText = "ALTER TABLE " & tblName & " Add Column BankName Char(25)"
cmd.Execute , , adCmdText
Set cmd = Nothing

[code]....