Applescript and spacing

[J]

I'm learning applescript to build a simple script for OmniGraffle.  So 
I'm really sorry if this is a newbie questions.
My script is going to build 5 rectangle shapes each with its own text.  
I have no problem doing this.  However my questions are
	1) How do place the shape object into a list variable.  I create the 
shape using this command:
		set shp to make new shape at end of graphics with properties . . . . .
	Now I would like to keep the shape in list variable.

	2) After I have the list, I would like to apply the spacing command 
that is on the Align  Info Panel. I need to set the spacing to 0" and 
align them vertically.  How do I do this.  I can't figure this out to 
save my life.

I'm using version 2.2 of OmniGraffle.

Thanks.

J
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