# Using variables in API request

Learn how to effectively use variables in your test suite payloads.

# Selecting Environment and Using Variables

1. From your test suite, select the appropriate environment:

2. The system will show warnings for undefined variables:

3. Define variables through the Variables button:

# Variable Setup

When setting up variables:

1. Click the Variables button
2. Add required variables using the Add Variable button
3. Fill in both key and value:

# Testing with Variables

• Ensure all required variables are defined before running tests
• The system will indicate if any variables are missing
• Tests cannot be executed until all required variables are defined
• You can see test execution status and results in the test suite view

# Best Practices

• Always verify that required variables are defined
• Use consistent variable references across test cases
• Keep variable values up to date
• Document any special requirements or dependencies

# Error Handling

If you see undefined variables warning:

1. Note the variable names listed in the warning
2. Open the Variables drawer
3. Add any missing variables
4. Verify that all required variables are properly defined