QTableWidget and setSpan

[swiety]

I have QTableWidget( qt 4.3.2 ) witch 7 columns and very simple code:

for(int i=0; i<rowCount();i++)
{
   if(i%2==0)
     {
        resizeRowToContents( i );
        item( i, 5 )->setText("aaaaaa" );
        setSpan( i, 1, i, 7 );
     }
}

for(int i=0; i<rowCount();i++)
{
   if(i%2==0)
     {
        resizeRowToContents( i );
        item( i, 5 )->setText("aaaaaa" );
        setSpan( i, 1, i, 7 );
     }
}

To copy to clipboard, switch view to plain text mode 

After that I have something like this
before

after

Why this code doesn't work? It's bug or what?

[swiety]

my mistake - I have 8 columns