How do I redirect Django commands using PyDev?

I would like to run the following Django command (to dump the contents of my database into a text file):

python manage.py dumpdata my_app > data.json

I'm using the Django framework within PyDev as an Eclipse plugin. Therefore, in order to run the above command in PyDev I go to "Custom command" and insert dumpdata my_app > data.json. However, doing so results in an error because of the > character:

Error: Unknown application: >

How can I use > (redirection) in PyDev?