The series definition must include the index from which the value is read, otherwise they are all pointing to the first value.
http://jsfiddle.net/ecqshd6j/1/
var t = new TimeChart({
container: document.getElementById("demo"),
series:[
{
id: "value1",
name: "value1",
data: {index: 1}
},
{
id: "value2",
name: "value2",
data: {index: 2}
}
]
});