how to slow down random expressions?

[techd60595725]

I'm using expressions on the opacity to make a star shine on a still image. However when I set the random values in expressions, it does it every frame.

Is there a way to slow down when it randomly changes expressions. Also, is there a way to make sure that it ramps between the current value and the next value throughout the timeline?

[Nancy OShea]

Which software are you using?

This is the Lounge. It's not a product support forum so there's no technical help here.

[techd60595725]

Sorry, I don't know how I got lost, I thought I was sure to post help here. (using after effects)

[Szalam]

Use the wiggle() expression.