Lerp Rotator Node Not Triggering

I was following a tutorial by Cason Quisenberry on YT, just to make a door interaction. But my Lerp Rotator Node isn’t being triggered anymore. My door interaction is being triggered otherwise but it no longer rotates at all.




  • pure nodes do not trigger - they lack execution pins. They get evaluated when other nodes access them.
  • DoOnce after the TL update will not work. Not in the way you think, it makes no sense here.
  • the Delay node is not doing what you think it’s doing. If you want to perform a latent action after the TL has finished playing, use the Completed pin.
  • the interpolation is done twice, this will be inconsistent

I was following a tutorial by Cason Quisenberry on YT

If the tutorial has DoOnce & Delay inside the TL Update, and a double interpolation to boot, you may need to find a different tutorial…


Perhaps this is what you’re after:

You can do it without the extra variable and hardcode the A value into Lerp; depends on the initial state of the door - perhaps it’s ajar.