# Adding the new .jar file to your Eclipse build path

If you are using Eclipse as your IDE, you need to add the new .jar file to your build path of your custom component.

To add the new .jar file to your Eclipse build path:

1. Right-click on the project, and select Build Path > Configure Build Path.
2. Click the Libraries tab.
3. Click Add Variable, select DF_GLOBAL_LIB (which you should have added while setting up the SDK), and then click Extend.
4. Open the ext/ directory and select the .jar file containing your custom QueryFunction.
5. Click OK.

After adding the .jar file to the build path, you can import the class, and use your custom QueryFunction or QueryConfig to modify your QueryState.