How to Use Boolean Variables in Figma for Interactive Designs

In Figma, you use boolean variables to control component states by toggling between true and false. You create a boolean variable in the Variables panel and then link it to component properties or prototype interactions to switch visuals or behaviors.

Syntax

A boolean variable in Figma is a simple true/false value used to control component states or prototype logic.

• Variable Name: The identifier you give your boolean variable.
• Value: Either true or false.
• Usage: Bind the boolean variable to component properties or prototype triggers to toggle states.

text

BooleanVariableName = true // or false

Example

This example shows how to create a boolean variable named isActive and use it to toggle a button's color between blue and gray in a component.

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1. Open the Variables panel in Figma.
2. Click '+' to create a new variable.
3. Name it <code>isActive</code> and set type to Boolean.
4. Create a button component with two variants: one with blue fill (active), one with gray fill (inactive).
5. Link the <code>isActive</code> variable to the component's variant property.
6. In prototype mode, toggle <code>isActive</code> between true and false to switch button colors.

Output

When <code>isActive</code> is true, the button shows blue; when false, it shows gray.

Common Pitfalls

Common mistakes when using boolean variables in Figma include:

• Not setting the variable type to Boolean, causing errors in toggling.
• Failing to link the boolean variable properly to component properties or variants.
• Using multiple boolean variables without clear naming, leading to confusion.
• Expecting boolean variables to hold values other than true/false.

Always double-check variable type and bindings.

text

/* Wrong: Variable type set as Text instead of Boolean */
myToggle = "true"  // Incorrect

/* Right: Variable type Boolean with true/false values */
myToggle = true  // Correct

Quick Reference

Action	Description
Create Boolean Variable	Use Variables panel, set type to Boolean, name it.
Assign Value	Set variable to true or false.
Bind to Component	Link variable to component variant or property.
Toggle in Prototype	Change variable value to switch states.
Use Clear Names	Name variables descriptively like isOpen, isActive.

Key Takeaways

Boolean variables in Figma hold true or false values to control component states.

Create and manage boolean variables in the Variables panel with clear names.

Bind boolean variables to component variants or properties to toggle visuals.

Always set the variable type to Boolean to avoid errors.

Use prototype mode to test toggling boolean variables for interactive designs.