Hello,

I’ve found labels keep in the initial places when related connections changed. I’d like to suggest the following code for adjusting labels automatically. Label will be moved next to arithmetical center of connection’s line.

```
eventBus.on(['commandStack.connection.updateWaypoints.executed'],1000,function(e){
adjustSequenceLabel(e.context.connection);
});
eventBus.on(['shape.move.end'],1000,function(e){
for(var i in e.context.shapes){
for(var j in e.context.shapes[i].incoming){
adjustSequenceLabel(e.context.shapes[i].incoming[j]);
}
for(var j in e.context.shapes[i].outgoing){
adjustSequenceLabel(e.context.shapes[i].outgoing[j]);
}
}
});
function adjustSequenceLabel(sequence){
var center = getSequenceCenter(sequence);
var q = sequence.label;
modeling.moveShape(q,{x:center.x-q.x-q.width/2,y:center.y-q.y});
}
function getSequenceCenter(e){
if(!e.waypoints){return}
var c = e.waypoints[0];
var lengths = [];
for(var i = 1; i < e.waypoints.length;i++){
var d = e.waypoints[i];
lengths.push(Math.sqrt ( Math.pow(d.x-c.x,2) + Math.pow(d.y-c.y,2) ))
c = d;
}
var length = 0;
for(var i in lengths){ length += lengths[i] }
var cut = length/2;
var length = 0;
for(var i in lengths){
length += lengths[i];
if(length > cut){
length = cut + lengths[i] - length;
var la = length / (lengths[i] - length);
return {
x: (e.waypoints[i].x + e.waypoints[i*1+1].x*la)/(1+la),
y: (e.waypoints[i].y + e.waypoints[i*1+1].y*la)/(1+la)
}
}
}
return {x:0,y:0};
}
```