php - TCPDF - why margin-left not working? -

Why is not the TCPDF library working in the margin? I get an example from the TCPDF site:

and modify and add:

  $ pdf- & gt; Setgermin (0, 0, 0); $ Pdf- & gt; SetLeftMargin (0);   
 But it is not working on the left margin Top and Wright are working fine, but do not do the left? How do I set the 0 on the left margin?  
 I have:  
  // file name: tcpdf.php // version: 6.0.020 // start: 2002-08 -03 // last update : 2013-06-04    
 
 
 Try to install your cell padding to zero For  
  $ pdf-> Set Callpadding (0,0,0,0,0);