Sql query not updating data

See more:

VB

SQL

Hi, I have a delete button on a VB.NET app which when the user clicks, is supposed to change a boolean in a database to "False". This doesn;t work for some reason and I don't know why. This is the code:

If DataGridViewCustomers.CurrentRow.Cells(1).Value <> Nothing Then


           If CStr(DataGridViewCustomers.CurrentRow.Cells(10).Value.ToString) = "True" Then
               If MsgBox("Delete " + CStr(DataGridViewCustomers.CurrentRow.Cells(1).Value.ToString) + " from customers?", MsgBoxStyle.YesNo) = MsgBoxResult.Yes Then
                   SqlQuery = "UPDATE tblCustomers SET Active = '" & False & "' WHERE CustomerID = '" & DataGridViewCustomers.CurrentRow.Cells(0).Value.ToString & "'"
                   CustomerTable = db.updateData(SqlQuery)
                   DataGridViewCustomers.DataSource = CustomerTable

               End If
           Else
               MsgBox("Customer has already been deleted.")
           End If

       Else
           MsgBox("Please select a customer to delete.")
       End If

The actual SQL gets executed in a module of functions which I have made for efficiency. This is the function:

Public Function updateData(ByVal SqlQuery As String)
        If conn.State = ConnectionState.Closed Then
            conn.Open()
        End If
        Dim sqlCommand As New OleDbCommand
        With sqlCommand
            .CommandText = SqlQuery
            .Connection = conn
            .ExecuteNonQuery()
        End With

    End Function

What I have tried:

I have tried changing the True/False to 1/0 and Yes/No. None of which have worked though.