Change the content of the popup window when I click on about button

[AlaeddineSaadaoui]

Hi all,
I would like to know how I could change the content of the popup window when I click on about button.
Thank you in advance.
Alaeddine Saadaoui.
Rahall Transportation Institute.

[RobertScheitlin__GISP · Accepted solution]

Alaeddine,

   For that you need to see the documentation for the HeaderControllerWidget

http://help.arcgis.com/en/webapps/flexviewer/help/01m3/01m30000000n000000.htm

Don't forget to click the Mark as answer check on this post and to click the top arrow (promote).
Follow the steps as shown in the below graphic:

[AlaeddineSaadaoui]

Thank you so much for your help.