This tutorial let you understand how to add an external library into your Flex project.

1. Open a Flex project

Open an existing project or create a new project in Flex builder.

2. Open the properties of the project.

Select the current project in the Flex Navigator panel. Open the properties of the project by selecting menu>project>properties.

Navigate to the Flex Build Path page.

3. Add the library swc.

Click the “Add SWC..” button. Select the library file with *.swc.

Click OK button after select the file.