[Question] How to add the "slider" or any other effect on a custom_node workflow template?

Hi! You know the workflow templates, right? So the official ones have effects like this:


How would I add an effect like the slider to a custom_node workflow template under \example_workflows ?
I know the core ones [have this index.json](https://github.com/Comfy-Org/workflow_templates/blob/main/templates/index.json) file, but I don't know how or if it's even possible to add effects to a custom node workflow template.

I have recently released my [workflow on the manager](https://registry.comfy.org/publishers/diogod/nodes/inpainting-works) and I would love to do this.

I I know for the slider it expects the image to be the same name of the workflow with a "-1" and "-2" appended to the name. But it does not work. I think the index file is what makes the official ones work. But I could not make it work for me. I woul love some tips!

Thanks!

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