An animation what keeping opacity

Development Rendering
, , ,
1

Hello, everyone. I want to make an Animation what keeping opacity.
Here is what I want to do.

  1. Only opacity will change. Basic opacity is 1.
  2. From 0-sec to 0.5-sec, opacity will change 1 to 0.2.
  3. From 0.5-sec to 4.5-sec, opacity will keep 0.2.
  4. From 4.5-sec to 5-sec, opacity will change 0.2 to 1.

But I can’t make part 3 what keeping opacity.
How can I make it?

2

Hi,
I would use a Timeline node with a dynamic material instance set up,
it should look something like this

262627-answer.png
262627-answer.png1920×1080 243 KB

3

Really Thanks!
Can I ask one question?
In UserInterface widget blueprint, can I approach delay function?