About AEJuice Fix Legacy Expressions

AEJuice Fix Legacy Expressions is a script designed for Adobe After Effects v16 (CC 2016) and later. It scans a project and rewrites expressions that use syntax no longer accepted by the newer JavaScript engine. The tool addresses several specific issues: if/else statements placed on the same line without brackets, expressions ending in a function declaration, the this() shorthand (replaced with thisLayer()), snake_case property and method names, and Source Text array‑index access that requires a .value suffix. While the script resolves many common breakages, it does not modify every possible legacy difference; for example, it leaves expressions that end in an if statement without an else unchanged, as those run correctly in newer versions. Compatibility is listed for After Effects CC 2016 through CC 2022 and higher. The latest catalog entry notes an update date of October 19, 2023.

Features

• Automatically updates project expressions to work on both old and new After Effects
• Fixes if and else placed on the same line without brackets
• Fixes expressions that end in a function declaration
• Replaces the this() shorthand with thisLayer()
• Fixes snake case properties and methods
• Adds .value for Source Text array-index access to characters

Best for

After Effects users updating older projects whose expressions broke after Adobe’s v16 JavaScript engine change.