# Trouble masking a clip like the "grass tutorial"
**URL:** https://forum.kirupa.com/t/trouble-masking-a-clip-like-the-grass-tutorial/57750
**Category:** Uncategorized
**Created:** [July 15, 2004, 9:18pm UTC](https://forum.kirupa.com/t/trouble-masking-a-clip-like-the-grass-tutorial/57750 "2004-07-15T21:18:28Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@phase23](https://forum.kirupa.com/u/phase23)
#### Post date: [July 15, 2004, 9:18pm UTC](https://forum.kirupa.com/t/trouble-masking-a-clip-like-the-grass-tutorial/57750/1 "2004-07-15T21:18:28Z")
I have created a similar file to the grass tutorial, and for some reason cannot mask it. It shows it is being masked on the stage, but when I preview the movie, it is unmasked. I would really appreciate some help. I can only think that maybe the actionscripts are the culprit, but I am not a strong enough scripter to know. thank you.
---
### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [July 15, 2004, 11:08pm UTC](https://forum.kirupa.com/t/trouble-masking-a-clip-like-the-grass-tutorial/57750/2 "2004-07-15T23:08:53Z")
well, clownshoes, I seriously doubt your problem arises from some sort of scripting conflict.
Anyways, your question is too vague. Post your .fla and I’ll take a look at it.
---
### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [July 16, 2004, 10:58pm UTC](https://forum.kirupa.com/t/trouble-masking-a-clip-like-the-grass-tutorial/57750/3 "2004-07-16T22:58:11Z")
I am not sure who clownshoes is, but…
I am attaching the file.
In my first layer I have a mask. The second layer has the clip I want to mask.
The third a simple background.
Give it a whirl.
p23
---
### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [July 18, 2004, 5:27pm UTC](https://forum.kirupa.com/t/trouble-masking-a-clip-like-the-grass-tutorial/57750/4 "2004-07-18T17:27:50Z")
you can’t mask stuff generated by AS through the duplicateMovieClip function. you have to throw that into an MC in order to be masked.
---
### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [July 19, 2004, 5:39pm UTC](https://forum.kirupa.com/t/trouble-masking-a-clip-like-the-grass-tutorial/57750/5 "2004-07-19T17:39:36Z")
The AS with the duplicateMovieClip function is not attached to an object but to a layer. I am not sure how to get that into a movie clip. When I try and place it all in a MC it loses functionality. Any help here would be greatly appreciated
thanks
> [@bwh2](#):
>
> you can’t mask stuff generated by AS through the duplicateMovieClip function. you have to throw that into an MC in order to be masked.