Is it possible to integrate interactive text into the UI. ?
I really miss this possibility. 
can you add support for these scripts?
Change_Slider Change Value List.gh (6.1 KB)
We cannot support those scripts because they manipule attributes of input parameters. This is not compatible with the way ShapeDiver servers process inputs and send back solutions.
My guess is that you wanted to override the contents of a value list in order to use it as a text output in the parameters panel, as described in your first message:
We are exploring the possibility to display the content of data outputs in the control panel. However, since the data can be more than a short string (think a full JSON object or an entire tree of data), we want to find a convenient solution for all cases. I will let you know when we make progress on this topic.
Itās a shame, 
that we have to wait for such simple things.
Is there a ready-made solution for short lines?
Any update on this, please? My client is using iFrame and I need to display a bunch of information text to the user. I am aware of web app possibilities, but cannot use them in this particular case. Thanks.
Data Outputs can now be displayed in a panel of the model: Exploring data outputs
You can make sure to include this panel in your iframes by unchecking the āHide data outputsā option in the iframe settings of the model edit page: Iframe Settings
Let me know if this solves your issue.
PS: you mentioned you cannot use the App Builder for this case, but it provides of course more options to display information in the user interface, for example using the text widget.