need help with custom reznor please!

We are making a boss rush level where defeating a boo/reznor teleports you to another level. It's all working except when you kill this custom reznor, nothing happens and you don't get teleported.

This is the custom reznor:
https://www.smwcentral.net/?p=section&a=details&id=18880

Here are two clips. In the first one you see how killing the two koopas teleports you to the next level. The other clip shows the problem with the reznor.

https://www.youtube.com/watch?v=6nsUq4z09YU

https://www.youtube.com/watch?v=iopP0DnW-W8&ab_channel=JHKKFan

We have set the extra bit for the reznor so it spawns a door instead of ending the level...and changed the door and cement blocks to be blank tiles. We did the same with a custom boo without issues.

Would be awesome if someone could be kind enough to explain to me how to make this work. Thanks!

We figured it out. Here's the explanation LightAligns gave me with help from Fernap.

In the teleport on no sprites uberasm, I defined an available piece of free ram at the top (!TeleportFreeRam) and then included the value in the code for the teleport section. I then defined that free ram in the custom reznor and replaced the code that makes the door appear with a code that sets a free ram value to 1 (true)