#This is a very powerful script as you can include html from a document property to update a text area:
from Spotfire.Dxp.Application.Visuals import HtmlTextArea
vis = ta.As[HtmlTextArea]()
vis.HtmlContent = Document.Properties["HtmlInput"]
from Spotfire.Dxp.Application.Visuals import HtmlTextArea
vis = ta.As[HtmlTextArea]()
vis.HtmlContent = Document.Properties["HtmlInput"]
More details here
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