AMCharts How to color bullets by value?

I am working with amcharts and I tried to mark the bullets in the chart with the values ​​they have. So I created an array in javascript and passed the values ​​from the database to it. Green is just value for testing.

   var chartData = [
      <?php
         foreach($tmp as $row)
           {
             echo'{"Wahrscheinlichkeit":'.$row[3].',"Schaden":'.$row[4].',"value":1,"Beschreibung":"'.$row[2].'", "Color":"Green"},'; 
           }
      ?>
   ];

      

        
        
        
      

    

Here's how I create a diagram:

 chart = new AmCharts.AmXYChart();
 chart.dataProvider = chartData;

      

        
        
        
      

    

Here I am drawing a diagram:

 var graph = new AmCharts.AmGraph();
            graph.valueField = "value"; // größe der Kugeln
            graph.xField = "Wahrscheinlichkeit";
            graph.yField = "Schaden";
            graph.maxBulletSize=20;
            graph.lineAlpha = 0;
            graph.bullet = "circle";
            graph.bulletColor= "[[Color]]";
            graph.balloonText = "Wahrscheinlichkeit:<b>[[x]]</b> Schaden:<b>[[y]]</b><br>Beschreibung:<b> [[Beschreibung]]</b>"
            chart.addGraph(graph);

      

        
        
        
      

    

At the bulletcolor point, I try to get the color from the array, but it doesn't work.

chart.write("chartdiv");

      

        
        
        
      

    

Waiting for advice and help from you