Thanks! the problem was that i used Tables before and had this as source:
var source =
{
localData: tennisLista,
dataType: "array",
//dataFields:
//[
// { name: 'veckarad', type: 'string' },
// { name: 'fDate', type: 'string' },
// { name: 'tDate', type: 'string' },
// { name: 'pass1', type: 'string' },
// { name: 'pass2', type: 'string' },
// { name: 'pass3', type: 'string' },
// { name: 'pass4', type: 'string' },
// { name: 'pass5', type: 'string' },
// { name: 'pass6', type: 'string' },
// { name: 'pass7', type: 'string' },
// { name: 'pass8', type: 'string' },
// { name: 'pass9', type: 'string' }
//]
};
but now it works!
Thanks again for your fast answer!
/michel