Draw a pie chart with Highcharts with datas error

I want to create a pie, using Highcharts.

The data are provided in a json format :

Here's the lines of my script :

    function myPie(d){
    console.log(d);
    chart = new Highcharts.Chart({
    ...
    series: [{
    type: 'pie',
    name: 'Test',
    innerSize: '80%',

    data: d
   }
    ]
    ...
    });

The response at the console is Object { p0: "0.232697", p1: "0.259336", p2: "0.298506", p3: "0.177095", p4: "0.0323651" }

And I get nothing

What's wrong ?
How can I solve this problem.
Thanks for help.