How to define on xaxis to show the 'value' and not 'index' and date format

Hello

I'm working with the charts module and i define the 'options' array like this:

$info=array();
//$info=charts_element_info();
//echo "at the top<p>";
$info['chart']=array();
$info['chart']['#type']='chart';
$info['chart']['#chart_type']='scatter';
$info['chart']['#chart_library']='highcharts';
$info['chart']['#raw_options']=array('turboThreshold'=>$cantidad_datos);
$info['chart']['#chart_id']='test_highcharts';
$info['chart']['#title']=$titulo;
$info['chart']['#width'] = '600px';
$info['chart']['#height'] = '400px';
$info['chart']['#tooltops']=TRUE;
 $axis_properties_x = array(
    '#type' => 'chart_xaxis', 
   '#axis_type' => 'datetime', // Options: linear, logarithmic, datetime, labels.
    '#title' => 'Fechas',
    '#title_color' => '#000',
    '#title_font_weight' => 'normal', // Options: normal, bold
    '#title_font_style' => 'normal', // Options: normal, italic
    '#title_font_size' => 12, // CSS value for font size, e.g. 1em or 12px.
    '#labels' => NULL,
    '#labels_color' => '#000',
    '#labels_font_weight' => 'normal', // Options: normal, bold
    '#labels_font_style' => 'normal', // Options: normal, italic
    '#labels_font_size' => NULL, // CSS value for font size, e.g. 1em or 12px.
    '#labels_rotation' => -45, // Integer rotation value, e.g. 30, -60 or 90.
    '#grid_line_color' => '#ccc',
    '#base_line_color' => '#ccc',
    '#minor_grid_line_color' => '#e0e0e0',
    '#max' => NULL, // Integer max value on this axis.
    '#min' => NULL, // Integer minimum value on this axis.
    '#opposite' => FALSE, // Display axis on opposite normal side.
   '#dateFormat' => '%d/%m/%Y',
  );
 $axis_properties_y = array(
    '#type' => 'chart_yaxis',
   '#axis_type' => 'linear', // Options: linear, logarithmic, datetime, labels.
    '#title' => $variable,
    '#title_color' => '#000',
    '#title_font_weight' => 'normal', // Options: normal, bold
    '#title_font_style' => 'normal', // Options: normal, italic
    '#title_font_size' => 12, // CSS value for font size, e.g. 1em or 12px.
    '#labels' => NULL,
    '#labels_color' => '#000',
    '#labels_font_weight' => 'normal', // Options: normal, bold
    '#labels_font_style' => 'normal', // Options: normal, italic
    '#labels_font_size' => NULL, // CSS value for font size, e.g. 1em or 12px.
    '#labels_rotation' => -45, // Integer rotation value, e.g. 30, -60 or 90.
    '#grid_line_color' => '#ccc',
    '#base_line_color' => '#ccc',
    '#minor_grid_line_color' => '#e0e0e0',
    '#max' => NULL, // Integer max value on this axis.
    '#min' => NULL, // Integer minimum value on this axis.
    '#opposite' => FALSE, // Display axis on opposite normal side.
  );

  $info['chart']['xaxis'] =array() +$axis_properties_x;
  $info['chart']['yaxis'] =array() +$axis_properties_y;

$info['chart']['chart_data']['#title']=$variable;
$info['chart']['chart_data']['#type'] = 'chart_data';
$info['chart']['chart_data']['#data']=$value;
//$info['chart']['chart_data']['#data']=array(array("1/01/2015", 10),array("4/01/2015", 20),array("6/01/2015", 30));
$info['chart']['chart_data']['#decimal_count']=3;

I have a serial data with data-value and i expects to show 'date' and 'date' value but it show the chart like the image

To render i use the following code, i'm not using the prerender funcionts yet;

$chart=$info;

//echo "<pre>";print_r($chart);echo "</pre>";

        $row[] = array(
          'data' => drupal_render($chart['chart']),
          'valign' => 'top',
        );
$table['rows'][] = $row;
return theme('table', $table);

Now i need to show the correct date format and the value not the index, how i can do it?