Select the event types that will trigger.

The Project ID of the personalized video project.

The video ID of the existing HeyGen video

The Storage Key of the photo (obtain one from Upload File)

The background of the whole video. Could be:
- A public HTTP link of an image (jpg/jpeg/png)
- A public HTTP link of a video (mp4 only). The background will loop the whole video if the background video is shorter than the whole video.
- A six-bit hex color code starts with #. (e.g. `#FAFAFA`)

Set the test flag to `true` to use test mode. Generation in test mode will not cost your credits and will contain a watermark on your video.

Set the flag to `true` to create video with caption.

An optional message that will be returned with the Trigger "Avatar Video Success". It will also be returned in Action "Get status of a video" and other triggers that include the avatar video success event. This message can be used to identify the video generated.

A unique identifier of an avatar. (**ONLY ONE** of Avatar ID and Taking Photo ID must exist)

The style of the avatar should be one of
- `normal`
- `circle`

A unique identifier of a talking photo. (**ONLY ONE** of Avatar ID and Taking Photo ID must exist)

The style of the Talking Photo should be one of
- `normal`
- `circle`

The text content that an avatar/talking_photo speaks.

The scale of the avatar or talking photo,
`1` means to scale the avatar/talking photo to the whole screen.
`0.5` means scale the avatar/talking photo to half of the screen

Specify the position of the avatar or talking photo. Must have `x` (horizontal) and `y` (vertical) keys. For example, for `x`:
- `0` means center horizontally
- `-0.5` means the center of the avatar (or talking photo) is on the left of the screen.
- `0.5` means the center of the avatar (or talking photo) is on the right of the screen.

Example: `{x:0,y:0}`

Unique identifier for the template video.

The properties in the template you want to replace. Join the variable name and the property name with `.` in the key. For example, if you want to replace the property `cover` of the variable name `image_0` to `fit`, set the key as `image_0.cover` and the value as `fit`. You may use this [web tool](https://api-studio.heygen.com) to find out the variable name for your template.

Specify the variables related to the contact. These variables can be later used in the video template of your personalized video project. Put in the left the variable name (for example, "First Name") and in the right the value (for example, "John"). These can also be from your previous trigger/actions.

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