API for typography and gradients variables is still in development.

Regarding stroke for sections, I think this might be considered a bug.

Thanks, Bleb
Hope to see it soon!

We have a guide for typography variables in the plugin API here: Working with Variables | Plugin API

Great news, thank you!
Didn’t see that few days ago. Glad it exists.

Why isn’t there a bindable option for fontSize?

There is! VariableBindableTextField | Plugin API

I’m trying to reference the variable id in a function using boundVariables.fontSize.id, but it’s returning undefined. Other id references like fills[0].boundVariables.color.id and boundVariables.strokeWeight.id work fine. Any thoughts?

boundVariables.fontSize.id doesn’t work because for VariableBindableTextField keys in the boundVariables object, because the values are arrays of aliases instead of just a single alias.

The reason is that unlike normal bindable fields like strokeWeight, you can bind different variables to substrings of text. So you need to do boundVariables.fontSize[0].id (after checking that the array is non-empty).

That worked! Thanks for the help.

@James_Yang Could you please enlighten us about how to manage textRangeFills ? Thank you in advance.

textRangeFills in boundVariables covers variables in paints applied to substrings of text.

To programmatically use a color variable for a range of text, you can use textNode.setRangeFills() with a paint that references a variable.

​@James_Yang ok, let’s say there is a variable 1 bound to paint applied to a substring in a text node, but there is also a fill style applied to a substring of the same node, which contains paint that is bound to variable 2. To use textRangeFills to exchange a variable for another one properly in this case, I need to get the fills text segments to know exactly to which characters is the variable bound. How would I know which variable is bound through the style and which one directly, since there is no information about it in obtained text segments, nor in boundVariables property?