title: Dynamically add data to series in Highcharts
body: <p>I´m trying to update my highchart serie appending new data.</p>
  
  <p>My series look like:</p>
  
  <pre><code>series: [{
          name: 'Serie1',
          data:[
              {
                  x: 0,
                  low: Date.UTC(2013, 07, 03, 0, 00, 00),
                  high: Date.UTC(2013, 07, 03, 4, 0, 0),
                  cliente:[{nombre:'Pepe',
                      Partida:'11111',
                      Bandejas:'35'},
                      {nombre:'Pepe1',
                      Partida:'222',
                      Bandejas:'50'}]
              },
              {
                  x: 0,
                  low: Date.UTC(2013, 07, 03, 5, 0, 0),
                  high: Date.UTC(2013, 07, 03, 9, 0, 0)
              },
                              {
                  x: 0,
                  low: Date.UTC(2013, 07, 03, 18, 0, 0),
                  high: Date.UTC(2013, 07, 03, 24, 0, 0)
              }
        ]
      },
          {
          name: 'Serie2',
          data:[
              {
                  x: 2,
                  low: Date.UTC(2013, 07, 03, 4, 0, 0),
                  high: Date.UTC(2013, 07, 03, 10, 0, 0)
              },
                              {
                  x: 2,
                  low: Date.UTC(2013, 07, 03, 18, 0, 0),
                  high: Date.UTC(2013, 07, 03, 24, 0, 0)
              },
                              {
                  x: 2,
                  low: Date.UTC(2013, 07, 03, 0, 0, 0),
                  high: Date.UTC(2013, 07, 03, 2, 0, 0)
              },
                              {
                  x: 2,
                  low: Date.UTC(2013, 07, 03, 11, 0, 0),
                  high: Date.UTC(2013, 07, 03, 18, 0, 0)
              }
        ]
      }          
              ]
  </code></pre>
  
  <p>When I click a button I want to append new data inside "Serie 1".</p>
  
  <p>I´ve tried chart.series[pos].setData(newdata); and it works, but delete all the previous data.
  I´ve also tried using chart.series[pos-1].data.push(newdata); but it doesn´t work.</p>
  
  <p>Any solution?</p>