How do I fix this??? --> CFrame is not a valid member of Decal

I was making a game and I watched tutorial = https://www.youtube.com/watch?v=YODOWwLZaxE for script. but I couldn't fix this error = CFrame is not a valid member of Decal

You're trying to move the decal itself, not the part the decal is on. You need to move the part. Please provide code next time so I can tell you where your error is.