actionscript 3 - Molehill Shader -

I am trying to understand the molehill and would like many tops by two matrix, say:

  output = theVertex * scalematrix * rotation matrix   
 I would look something like guessing my top peak:  
  "m44 vt0, Va0, vc0 \ N "+" mul op, vt0, vc1 \ n ";   
 and I'll set the matrix with  
  context3d.setProgramConstantsFromMatrix (Context3DProgramType.VERTEX, 0, scaleMatrix); Reference 3d.setProgramConstantsFromMatrix (Reference 3DProgramType.VERTEX, 1, Rotation Matrix);   
 But its not working what I am doing wrong?  
 I know that I can do the matrix several times before putting on the shader, but I am trying to understand the AGL.  
 Cheers   
 
 
 A  m44  is matrix 4x4 floats , It takes  4 registers  as each register 128bits (4 floats), then you have to load your rotation matrix in the vc4 register:  
  "m44 Vt0, va0, vc0 \ n "+" mul op, vt0, vc4 \ n ";   
 
  reference 3d.setProgramConstantsFromMatrix (Context3DProgramType.VERTEX, 0, scaleMatrix); Reference 3d.setProgramConstantsFromMatrix (Reference 3DProgramType.VERTEX, 4, Rotation Matrix);