How to share data between screens

Hi,

I've a dashboard with two screens and on each screen I use the same widget. This widget has a textItem, for which I set the text property on screen1, using some java script. When I switch to the next screen, the text property is not carried over. In other words, the text set on screen1 is not set on screen2. It appears to me as for each screen, the widget object is new instantiated.

If possible, how can I share properties between 'same' widget textItems. 

Thanks in advance for your help.