String Not Working As Table Name - Access VBA - - ms-access

Question

The beginning of the following code is supposed to get the BaseName of a file name in a textbox on a form and set it equal to a String "tblnewbid". The Debug.Print tblnew bid prints out the correct Table name exactly as it is supposed to. I verified the characters match exactly and there is an actual table that matches that name.
When I run the code I get error: Cannot find table or constraint. If I manually change tblnew to the actual table name, the code runs fine. Could it be that I need to Dim tblnewbid as something other than string?
Private Sub btnInsertRegions_Click()
DoCmd.Hourglass True ' turn on Hourglass
Dim db As Database
Dim rs As Recordset
Dim strSQL As String
Dim FSO As New FileSystemObject
Dim tblnewbid As String
Set db = CurrentDb
tblnewbid = FSO.GetBaseName(Me.txtFileName)
Debug.Print tblnewbid
db.Execute "ALTER TABLE tblnewbid ADD COLUMN O_StateRegion CHAR", dbFailOnError
db.Execute "ALTER TABLE tblnewbid ADD COLUMN D_StateRegion CHAR", dbFailOnError
Set rs = db.OpenRecordset("Select [OriginState] from [tblnewbid];")
rs.MoveFirst
strSQL = "UPDATE [tblnewbid] INNER JOIN [tblStates]"
strSQL = strSQL & " ON [tblStates].[StateAbbrev] = [tblnewbid].[OriginState]"
strSQL = strSQL & " SET [tblnewbid].[O_StateRegion]=[tblStates].[StateRegion]"
db.Execute (strSQL), dbFailOnError
rs.MoveFirst
strSQL = "UPDATE [tblnewbid] INNER JOIN [tblStates]"
strSQL = strSQL & " ON [tblStates].[StateAbbrev] = [tblnewbid].[DestinationState]"
strSQL = strSQL & " SET [tblnewbid].[D_StateRegion]=[tblStates].[StateRegion]"
db.Execute (strSQL), dbFailOnError
rs.Close
Set rs = Nothing

Answer 1

When you place a variable inside double quotes, it stops being a variable and becomes a literal string.
What you want to do instead is have the variable evaluated and then placed inside of the string. You can do this with concatenation:
ie:
db.Execute "ALTER TABLE " & tblnewbid & " ADD COLUMN O_StateRegion CHAR", dbFailOnError
Apply this concatenation to each line that needs to evaluate your variable.