# Using variables in API request

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

# Selecting Environment and Using Variables

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

2. 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 an undefined variable 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.