ActionScript 2.0 :: Adjusting Line _width With Changes _height Too?

Nov 19, 2009

I have a horizontal line that is in a movie clip. To adjust the width of the line when I click a button I use

Code:
btn.onPress = function(){
line._width += 20;
}

This does change the width, but the line gets thicker (height is increasing) as the width increases. Why is this happening, and how can I keep it from happening? I want only the length of the line to change, not its thickness.

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