# Event - Common Parameters

A complete event consists of a [Trigger Event](/playable-tools-content-editor/content-editor-user-guide/editing-page-module-intro/parameter-setting-area/event-common-parameters/trigger-event.md)  and a [Response Event](/playable-tools-content-editor/content-editor-user-guide/editing-page-module-intro/parameter-setting-area/event-common-parameters/response-event.md). By correctly linking the trigger event and the response event, you can achieve interaction and logic functionality.

* The trigger event is the condition or action that causes the event to execute (e.g., "click").  These events vary depending on the selected area, so trigger events can be divided into "**scene events**" and "**layer events**".
* The response event is the operation or feedback that occurs when the trigger event happens (e.g., "redirect to app store").  These events are displayed after adding the trigger event and do not differentiate between scenes and layers.

For creating playable projects with simple logic, regular events are usually sufficient. 

However, when dealing with more complex logic and higher difficulty in project creation, you may need to utilize [Global Variables](/playable-tools-content-editor/content-editor-user-guide/editing-page-module-intro/top-asset-library/global-variables.md), which are an advanced version of events. Global variables may have a certain level of complexity in understanding, so we recommend understanding and mastering regular events before diving into global variables.

<figure><img src="/files/xE5cERJJRPRb2zQCiezw" alt=""><figcaption></figcaption></figure>

👉Recommended Reading： [Event Issues](/playable-tools-content-editor/content-editor-faq/event-issues.md)  [Creation Tips - Event Setting](/playable-tools-content-editor/content-editor-creation-tips-center/common-creation-tips/creation-tips-event-setting.md)


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