Problem with "src" when embed grafana to custom widget

I’d like use config to setup Grafana url in custom widget:

but it’s not working. Maybe sombody have some idea?

I don’t have the answer you seek but I moved this to a more appropriate category.

What’s not working?
You should just be able to call the image from the grafana share or using an iframe, call the interactive graph.


When i use iframe its correct:

But i need to use Configuration instead of static url. In this case its not working: