Creating triggers
To create a trigger, complete the following steps:
Click Triggers from the menu on the left side of the page.
Click New.
Replace 'Untitled Trigger' with 'NebulaCXgaTriggerEvent'.
Click the overlapping-circles icon in the middle of the dialog, then click Custom Event as the trigger type.
In the Event Name field, enter 'NebulaCS gaTriggerEvent'. Then click Save.
Confirm that the new trigger with the name NebulaCXgaTriggerEvent is listed in the Triggers list.