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Refresh your "My Picos" page, and click on the "Testing" tab.
Notice the button "echo/hello", representing this event for your ruleset named "hello_world". Click on this button to send the event.
Using logs
Look at the console from which you started your pico-engine.
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You can also enter the value for the argument in the "Testing" tab, in the box whose placeholder is "obj", and click on the link "hello".
Congratulations! You know how to send queries to a pico, either directly using a URL, or through the UI.
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With these changes, we can now enter a value into the box whose placeholder is "name" before clicking on the "echo/hello" button to send the event.
The console of your web server should now show the expected message like this (embedded in other logging messages):
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