Google Pie Chart is not showing any slices but others

The problem has been solved.

The value was a string and it had to be a number so in PHP just cast the value to an int and then put it into the array.

{"cols": [{            "id": "New jobs",            "label": "New jobs",            "pattern": "",            "type": "string"        },        {            "id": "Date",            "label": "Date",            "pattern": "",            "type": "number"        }    ],    "rows": [{"c": [{                    "v": "01-11-2012",                    "f": null                },{                    "v": 5,                    "f": null                }            ]        },{"c": [{                    "v": "02-11-2012",                    "f": null                },{                    "v": 3,                    "f": null                }            ]        },{"c": [{                    "v": "03-11-2012",                    "f": null                },{                    "v": 8,                    "f": null                }]        },{"c": [{                    "v": "04-11-2012",                    "f": null                },                {                    "v": 2,                    "f": null                }            ]        },{"c": [{                    "v": "05-11-2012",                    "f": null                },                {                    "v": 6,                    "f": null                }            ]        },{"c": [{                    "v": "06-11-2012",                    "f": null                },                {                    "v": 7,                    "f": null                }            ]        }    ]}