C# double value sending SQL command

double BIRIM_FIYAT;
if (double.TryParse(input, out BIRIM_FIYAT))
{
    using (var connection = new SqlConnection("..."))
    using (var command = new SqlCommand("INSERT INTO REPORT_DETAILS (BIRIM_FIYAT) VALUES (@BIRIM_FIYAT)", connection))
    {
        command.Parameters.AddWithValue("@BIRIM_FIYAT", BIRIM_FIYAT);
        connection.Open();
        command.ExecuteNonQuery();
    }
}