Changing Flex application indentifier

How would I change the application identifer for a Fl开发者_运维技巧ex app?

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There are some requirements regarding the application id. From the docs:

An identifier string unique to the application, known as the application ID. The attribute value is restricted to the following characters:

• 0-9
• a-z
• A-Z
• . (dot)
• - (hyphen)

The value must contain between 1 to 212 characters.

If your new value follows these requirements and you still get an error, post a specific question about the error you're getting.