Flash MX 2004.
Math.concatMatrix(mat1, mat2)
MatrixThe Matrix object to be concatenated (see Matrix object).
MatrixThe Matrix object to be concatenated (see Matrix object).
A concatenated Matrix object.
MatrixMethod; Performs a matrix concatenation and returns the result.
The following example stores the currently selected object in the elt variable, multiplies the object matrix by the view matrix, and stores that value in the mat variable:
var elt = fl.getDocumentDOM().selection[0];
var mat = fl.Math.concatMatrix(elt.matrix , fl.getDocumentDOM().viewMatrix);