Drive many node parameters from a single place — share values like "outline color" or "base size" across the whole project.
Variables
Create and manage them in the variables panel (Ctrl+Alt+V, left toolbar).
- "+ New variable" creates a typed variable (float / int / color / enum...). You also set the display name, control style (slider etc.), range (min/max/step), initial value, and a comment
- Bind a parameter to a variable from the inspector and it follows the variable's value
When to use them
- Mass-producing variations: make color or size a variable and export with only the variable changing
- One value used by many nodes (line thickness, light angle) managed in one place
Parameter controllers
param_controller— routes an upstream output value into another node's parameter. Combine with waveforms to drive several nodes at once
Promotion
- Parameters inside a custom node can be promoted (exposed) so the packaged graph is adjustable from the outside (→ 11 Custom Nodes & Library)