Adode Illustrator Ledgend Script not working.

Hello Guys,

I am trying to run the following Script to generate swatch ledgend. I am getting the errod you can see on the screen shot, Can somebody assist me. I tried another simular script but also got the same error. 

SCRIPT:

doc = activeDocument, 

swatches = doc.swatches, 

cols = 4, // number of columns in group 

displayAs = "SPOTColor",  //or "CMYKColor" 

printColors = ["SPOT"], // RGB, CMYK, LAB and/or GrayScale 

textSize = 6, // output text size value in points 

rectRef=null, 

textRectRef=null, 

textRef=null, 

swatchColor=null, 

x=null, 

y=null, 

w=16; // width of ellipse

h=16, // height of ellipse

h_pad = 45, //distance between swatches horizontally

v_pad = 10, // distance between swatches vertically

t_h_pad = 55, //width of text box

t_v_pad = 2, //vertical position of text box - more means lower

activeDocument.layers[0].locked= false; 

var newGroup = doc.groupItems.add(); 

newGroup.name = "NewGroup"; 

newGroup.move( doc, ElementPlacement.PLACEATBEGINNING ); 

for(var c=2,len=swatches.length;c<len;c++) 

{ 

    var swatchGroup = doc.groupItems.add(); 

    swatchGroup.name = swatches.name; 

    x= (w+h_pad)*((c-2)% cols); 

    y=(h+v_pad)*(Math.round(((c)+.03)/cols))*-1 ; 

    rectRef = doc.pathItems.ellipse(y,x, w,h);  //circle or rectangle

    swatchColor = swatches.color; 

    rectRef.fillColor = swatchColor; 

    rectRef.stroked=false; 

    textRectRef =  doc.pathItems.rectangle(y- t_v_pad,x+ t_h_pad, w-(0.95*t_h_pad),h-(1*t_v_pad));  // padding between ellipse and text box

    textRef = doc.textFrames.areaText(textRectRef);

    textRef.contents = swatches.name; 

    textRef.textRange.size = textSize; 

    rectRef.move( swatchGroup, ElementPlacement.PLACEATBEGINNING ); 

    textRef.move( swatchGroup, ElementPlacement.PLACEATBEGINNING ); 

    swatchGroup.move( newGroup, ElementPlacement.PLACEATEND ); 

}