AM Select And Set is an After Effects script from Adirai Maji built around two connected tasks: selecting layers by their attributes, then setting and changing their values. You choose layers according to their attributes and adjust the values from there.
The script runs across a wide range of After Effects releases, from CC through the 2024 version. Along the way it covers CC 2014, CC 2015, CC 2015.3, CC 2017, CC 2018, CC 2019, 2020, 2021, 2022 and 2023, so it works on both older installations and current ones.
As of version 1.0.1, released August 2021, the selection options include guide layers and environment layers, added after the initial May 2021 build. The script sits in the aescripts library at popularity rank 397, and a demo video is available for anyone who wants to view it before installing.