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Quick Start

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Prerequisites

• Shopify Plus store
• Function Lab app installed
• Admin access to your Shopify store

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Your First Discount Function

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Step 1: Access Function Lab

1. Log into your Shopify admin
2. Navigate to Apps → Function Lab
3. Click “Create New Function”
4. Select “Product Discount”

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Step 2: Configure Your Rule

{
  "rules": [
    {
      "conditions": {
        "customer.tags": {
          "includes": "VIP"
        }
      },
      "events": [
        {
          "discount": "product_discount",
          "params": {
            "discount_type": "percentage",
            "value": 10,
            "message": "VIP Customer Discount"
          }
        }
      ]
    }
  ]
}

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Step 3: Test Your Function

1. Click “Preview” in the Function Lab interface
2. Enter a test cart with a customer tagged “VIP”
3. Verify the 10% discount appears

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Step 4: Activate

1. Give your function a name: “VIP Customer Discount”
2. Click “Save and Activate”
3. Your function is now live!

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What Just Happened?

• Condition: Checks if customer has “VIP” tag
• Event: Applies 10% discount when condition is true
• Message: Shows “VIP Customer Discount” to customer

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Next Steps

• Core Concepts - Understand rules, conditions, events, and facts
• Common Patterns - Explore more discount scenarios
• Product Discounts - Deep dive into product discount features

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Common First Issues

• Verify customer has “VIP” tag (case-sensitive)
• Check function is activated in Shopify admin
• Ensure no conflicting discounts exist

• Percentage discounts use whole numbers (10 = 10%, not 0.10)
• Check discount_type is set to “percentage”