object width = 0 no matter what I do

Code:

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        trace ("spc1.scaleX: " + spc1.scaleX);  // = 1
        trace ("spc1.width: " + spc1.width);  = 0
        spc1.scaleX = 1;
        spc1.width = stage.stageWidth - 20;
        trace ("stage.stageWidth: " + stage.stageWidth); // = 1000
        trace ("spc1.scaleX: " + spc1.scaleX); // = 0  why?
        trace ("spc1.width: " + spc1.width); // 0  why?

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Could someone please explain me that ????
Thanks in advance!

ok it was an emty movieclip. sorry. can i delete a post ?