Using JSON to change color.

[montanal5247998]

I am attempting to use a JSON script to change the color of a solid. I have the solid hooked up to a color controller that uses the "Color Control" effect.

I got a text layer to hook up to my JSON using this expression:

eval("var practiceText=" + footage("bogus.json").sourceText);

practiceText[0].PracticeText;

I am trying to use a similar expression to change the color of that solid:

eval("var mainColor=" + footage("bogus.json").color);

mainColor[0].MainColor

However I keep getting the error "Error: TypeError: cannot read property of '0' of undefined"

Does anyone know what I would need to change to get it to read the color value in the JSON?

This is what my JSON script looks like.

This is a full picture of the expression on the color control

[Mathias Moehl · Accepted solution]

My free mamoworldJSON script can generate expressions that link to colors in JSON files.

https://aescripts.com/mamoworldjson/

See this tutorial for details:

[montanal5247998]

Thank you, that works great! I also see that it has the ability to show or hide images. Is it possible to swap out an image completely using mamoworld? Possibly by entering a new file path in the JSON script?

[Mathias Moehl]

Expressions and the data-driven animation features of After Effects cannot replace footage, hence showing/hiding is the best you can  do with mamoworldJSON or any other approach that uses only expressions.

If you want to replace footage, you need a script instead of expressions. An automated (not free) solution that supports this is, for example, Templater

https://aescripts.com/templater/