# Movieclip Alpha

**URL:** <https://forum.kirupa.com/t/movieclip-alpha/254259>\
**Category:** flash\
**Created:** [March 10, 2008, 10:59am UTC](https://forum.kirupa.com/t/movieclip-alpha/254259 "2008-03-10T10:59:38Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![MrH2o](https://avatars.discourse-cdn.com/v4/letter/m/a9a28c/32.png) [@MrH2o](https://forum.kirupa.com/u/MrH2o)\
**Post date:** [March 10, 2008, 10:59am UTC](https://forum.kirupa.com/t/movieclip-alpha/254259/1 "2008-03-10T10:59:38Z")

</div>

I want a “8mm” effect with shaking and fading and i followed this tutorial.  
[http://www.toxiclab.org/tutorial.asp?ID=72](http://www.toxiclab.org/tutorial.asp?ID=72)

The only problem with this is that the alpha is alittle to “flashy” I want the alpha to pend between lets say 80-100% and not 0-100%. I understand it have something to do with

```auto
tremble._alpha = random(45);

```

but thats were my knowledge stops. Can anyone give me the right code for this?

Thanks in advance