I can't seem to get an animated transition between line graphs when I pass in a new set of data. I am using an array of objects as data like this:

[{ clicks: 40 installs: 10 time: "1349474400000" },{ clicks: 61 installs: 3 time: "1349478000000" }];

I am using this code to setup my ranges / axis's

var xRange = d3.time.scale().range([0, w]),
yRange = d3.scale.linear().range([h , 0]),
xAxis = d3.svg.axis().scale(xRange).tickSize(-h).ticks(6).tickSubdivide(false),
yAxis = d3.svg.axis().scale(yRange).ticks(5).tickSize(-w).orient("left");

var clicksLine = d3.svg.line()
.interpolate("cardinal")
.x(function(d){return xRange(d.time)})
.y(function(d){return yRange(d.clicks)});


var clickPath;
function drawGraphs(data) {

    clickPath = svg.append("g")
        .append("path")
        .data([data])
        .attr("class", "clicks")
        .attr("d", clicksLine);
}

function updateGraphs(data) {

    svg.select('path.clicks')
        .data([data])
        .attr("d", clicksLine)
        .transition()
        .duration(500)
        .ease("linear")
}

I have tried just about everything to be able to pass in new data and see an animation between graph's. Not sure what I am missing? does it have something to do with using an array of objects instead of just a flat array of numbers as data?