attrFieldGrp & matrix

[yao-yansi]

hi all

I know how to add a vector into UI:

 
//create a cube
polyCube -ch on -o on -cuv 4 ;
 
string $object[] = `ls -sl `;
string  $obj;
 
string $window = `window -title "attrFieldGrp Example"`;
        columnLayout;
    for($i =0; $i< size($object); $i++)
    {
    text -label $object[$i];
        attrFieldGrp -attribute ($object[$i] + ".translate");
        attrFieldGrp -attribute ($object[$i] + ".rotate");
        attrFieldGrp -attribute ($object[$i] + ".scale");
    }
showWindow;

but when i add a matrix type , it doesn't work anymore:

//create a cube
polyCube -ch on -o on -cuv 4 ;
 
//create a window which lists  the translate, rotate and scale
//fields of selected o transform bjects
 
string $object[] = `ls -sl `;
string  $obj;
 
 string $window = `window -title "attrFieldGrp Example"`;
    	columnLayout;
	for($i =0; $i< size($object); $i++)
	{
	text -label $object[$i];
    	attrFieldGrp -attribute ($object[$i] + ".translate");
    	attrFieldGrp -attribute ($object[$i] + ".rotate");
    	attrFieldGrp -attribute ($object[$i] + ".scale");
    	attrFieldGrp -attribute ($object[$i] + ".worldMatrix");//<---------------NOTE
	}
showWindow;

  Could you tell me how to use attrFieldGrp or any other mel command to display a matrix ?

Thank you.