Pop Up Window

[AhmadSopian1]

How to create a popup window in popup identify?

in click detail popup window??

[RobertScheitlin__GISP]

Ahmad,

Here are some blogs you need to read (kind of old news):

Esri’s Roadmap for Web Developers | ArcGIS Blog 

Final Release Support Plan for ArcGIS API / Viewer (Flex, Silverlight) | Support Services Blog 

Bottom line is you should not be investing any time in Flex development.