# Objects, arrays and tables
Group fields with Object, define lists with Array, and render each element with each.
Use an **Object** to group related fields, and an **Array** for a list. This structure lets HTML read individual values and create content for each element supplied to the template.
This guide starts with recipient details, adds a list of items, and renders that list as table rows.
## 1. Group fields with Object
In **Parameters → Schema**, add `recipient`, choose **Object**, and add two Text fields: `name` and `email`.
The data looks like this:
```json
{
"recipient": {
"name": "Tembuilder",
"email": "hello@tembuilder.com"
}
}
```
Read nested fields with dot notation: `{{ params.recipient.name }}` and `{{ params.recipient.email }}`.
Parameters
SchemaPayload
⌄ recipientObject
nameText
emailText
＋ Add field
recipient · Object → name / email
## 2. Declare a list with Array
Add `items`, choose **Array**, and set its element structure to **Object**. Add a Text `name` and Number `quantity` to that structure.
```json
{
"items": [
{ "name": "Item A", "quantity": 2 },
{ "name": "Item B", "quantity": 1 }
]
}
```
Declare the item’s fields once; they apply to each element in the list. Supply an actual array rather than putting the whole JSON list in a Text field.
Parameters
⌄ itemsArray
Item schemaObject
nameText
quantityNumber
Array → item structure → nested fields
## 3. Generate table rows with each
Use an `each` loop in section HTML:
```handlebars
Item
Quantity
{{#each params.items}}
{{ name }}
{{ quantity }}
{{else}}
No items yet
{{/each}}
```
Inside `each`, `name` and `quantity` belong to the **current item**. The `else` branch renders when the array is empty.
For a long table, put the header in `` and allow the section to split across sheets. See [Long tables and pagination](/docs/editor/pagination/).
ItemQuantity
Item A2
Item B1
{{#each params.items}} {{ name }} · {{ quantity }}{{else}} No items yet{{/each}}
each renders each item · else handles an empty list
## 4. Lists without nested fields
For simple values, set an array’s element type to **Text**, Number, or Boolean instead of Object. For example, `tags` is an array of Text:
```json
{ "tags": ["Design", "Review", "Approved"] }
```
Use `this` to read the element itself inside the loop:
```handlebars
{{#each params.tags}}
{{ this }}
{{/each}}
```
Object and Array data both appear in **Payload**, ready to copy into **Run**.
{ "tags": ["Design", "Review", "Approved"] }
DesignReviewApproved
Array of Text → use this to read each element
See the [Handlebars syntax reference](/docs/data/handlebars/) for conditions, scope, escaping, and advanced examples.