How to Bring the Companion Cube to GLaDOS's battle (Part 1) - Failure

The end battle in this walkthrough is "impossible" to bring the companion cube. BUT if you follow the steps on the last part, you can do it. Now, I forgot to record the battle, so I will make a battle video. If you don't follow the steps on the last part, the Companion Cube WILL disappear. (As you can see on Part 5) Thanks for watching Part 1 (Failure)! I hope you enjoyed! (BTW this is very difficult to do).