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Merge pull request #47 from docsforadobe/colombo/update-env-light-api

Update .lightSource attribute of Light Layer with New Beta Functionality

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`@@ -10,6 +10,11 @@ What's new and changed for scripting?`
`10`	`10`
`11`	`11`	`## After Effects 25`
`12`	`12`
	`13`	`+### [After Effects 25.2 Beta build 98](https://community.adobe.com/t5/after-effects-beta-discussions/animated-environmental-lights-available-now-in-after-effects-beta/td-p/15130220) (February 2025)`
	`14`	`+`
	`15`	`+- Scripting methods and attributes added:`
	`16`	`+ - Updated: [LightLayer.lightSource](../layer/lightlayer.md#lightlayerlightsource)`
	`17`	`+`
`13`	`18`	`### [After Effects 25.0 Beta build 26](https://community.adobe.com/t5/after-effects-beta-discussions/new-in-ae-25-0-build-25-scripting-hooks-for-font-fallback-management/m-p/14809794) (August 2024)`
`14`	`19`
`15`	`20`	`- Scripting methods and attributes added:`

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`@@ -41,13 +41,15 @@ LightLayer defines no additional attributes, but has different AE properties tha`
`41`	`41`	`app.project.item(index).layer(index).lightSource`
`42`	`42`
`43`	`43`	`!!! note`
`44`		- `LightLayer.lightSource` was added in After Effects 24.3
	`44`	+ `LightLayer.lightSource` was added in After Effects 24.3, but allowed only HDR and EXR layers as sources.
	`45`	`+`
	`46`	`+ In After Effects (Beta) 25.2.0.098, it was updated to allow any 2D layer type as a source.`
`45`	`47`
`46`	`48`	`#### Description`
`47`	`49`
`48`	`50`	For a light layer, the layer to use as a light source when `LightLayer.lightType` is `LightType.ENVIRONMENT`.
`49`	`51`
`50`		-`LightLayer.layerSource` must be a footage layer referencing a .EXR or .HDR footage item. Trying to set this attribute to any other layer produces an error.
	`52`	+`LightLayer.lightSource` can be any 2D video, still, or pre-composition layer in the same composition. Attempting to assign a 3D layer as the `.lightSource` will result in an "Invalid light source specified" error.
`51`	`53`
`52`	`54`	`---`
`53`	`55`

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