javascript - edit tooltip on a kartograph map -

i'm using kartograph on map adapt style/tooltip depending on data, follow showcase : http://kartograph.org/showcase/choropleth/

map.addlayer('layer_0', {   styles: {     'stroke-width': 0.7,     fill: function(d) {             return color(stars[d["nuts-id"]]?                          stars[d["nuts-id"]].total_stars:                          0);             },     stroke: function(d) {               return color(stars[d["nuts-id"]]?                            stars[d["nuts-id"]].total_stars:                            0).darker();     },   },   tooltips: function(d) {               return [d["nuts-id"], stars[d["nuts-id"]]?                                     stars[d["nuts-id"]].total_stars:                                     0];   } }); 

the map good, want edit it.

for style did :

map.getlayer('layer_0').style('fill', function(d) { ... }); map.getlayer('layer_0').style('stroke', function(d) { ... }); 

but don't manage edit tooltip function...

i try solution : https://github.com/kartograph/kartograph.js/wiki/tooltips "map.tooltips not defined" error...

i found correct syntax :

map.getlayer('layer_0').tooltips(function(d) { ... });