Change the position of a connection label

Hello,

I was able to change the label text successfully but no the text position.​

I'm using :

kendoDiagram.connections[0].redraw({content: {text: 'myLabel', x: 20, y: 50}})​;

In fact, the position changes but temporary until:

 - selecting other connection/shape

 - clicking in the background of the diagram

 - calling  kendoDiagram.connections[0].re​fresh();

H​ow can I proceed to change the position of the label please?

Best regards,

Seifeddine