---
title: How to Create a Form that Repeats a Group of Fields for Each Selected Item
description: This step-by-step guide explains how to limit the number of entries in a Dynamic Panel based on the number of selected choices or a numeric value from another question.
---

# How to Create a Form that Repeats a Group of Fields for Each Selected Option

## About Bindings

In some cases, you may need to collect repeatable sets of data from respondents—for example, family members to include in an insurance policy, previous addresses, or test results. Survey Creator allows you to do this using the Dynamic Panel element.

A Dynamic Panel includes the main title (for example, *List the countries you've visited in the past 10 years*) and individual dynamic titles for each repeatable group of fields. Since you may not know how many entries a respondent needs to provide, a Dynamic Panel allows them to add entries as needed.

When configuring a Dynamic Panel, you can define fixed limits for the number of entries:

- **Initial number of entries** – the number shown when the respondent reaches the question (default: `0`)
- **Minimum number of entries** – the required minimum (default: `0`)
- **Maximum number of entries** – the allowed maximum (default: `100`)

However, in some cases, you may want the number of entries to be set dynamically—for example, based on selected choices in a multi-select question (such as a Multi-Select Dropdown or Checkboxes) or a numeric input from a Single-Line Input question. You can achieve this using the **Bindings** property. It connects the Dynamic Panel to another question and automatically adjusts the number of available entries based on the respondent's input.

This guide explains how to:

- [Bind a Dynamic Panel to a Multi-Select Dropdown](#how-to-repeat-form-fields-for-each-selected-option)
- [Bind a Dynamic Panel to a Numeric Input](#how-to-repeat-a-group-of-questions-based-on-a-numeric-input)  

## How to Repeat Form Fields for Each Selected Option

> In this example, we use a Multi-Select Dropdown (Tag Box) question. The same configuration applies to a Checkbox question.

<video src="images/eud-tag-box-to-dynamic-matrix.mp4" autoplay muted playsinline loop style="width: 100%"></video>

### Configure the Multi-Select Question

1. Add a **Multi-Select Dropdown** question to your form.  
2. Set a **Question name (ID)**, **Question title**, and, optionally, a **Question description**.

<img src="images/eud-binding-1-906.png" alt="Add and configure a Multi-Select Dropdown question" width="1544" height="906">

3. In the **Choice Options** category, locate the **Choices** table and click the **Pen** icon to enter the choices in bulk.  
4. Enter your choice options in the popup using the `choiceValue|choiceText` format.  
5. Click **Apply**.  

<img src="images/eud-binding-3-906.png" alt="Add choice options to the Multi-Select Dropdown in bulk" width="1544" height="906">

6. (Optional) Enable **Allow custom choices** if respondents should be able to create additional choice options that might be missing.  

<img src="images/eud-binding-4-906.png" alt="Allow respondents to add custom choice options" width="1544" height="906">

7. Go to the **Data** category and locate **Join identifier**.  
8. Enter a value that will connect this question with the Dynamic Panel (for example, `family`).

<img src="images/eud-binding-7-906.png" alt="Specify a join identifier for the Multi-Select Dropdown" width="1544" height="906">

### Configure the Dynamic Panel

1. Add a **Dynamic Panel** question to your form.  
2. Set a **Panel name**, **Panel title**, and, optionally, a **Panel description**.  

<img src="images/eud-binding-5-906.png" alt="Add and configure a Dynamic Panel question" width="1544" height="906">

3. Add the questions you want to repeat inside the panel.  

<img src="images/eud-binding-6-906.png" alt="Add questions to the Dynamic Panel" width="1544" height="906">

4. In the **General** category unselect the **Enable entry addition** and **Enable entry removal** properties. This ensures that respondents cannot manually remove or add new entries, and their number is controlled only by the bindings.
5. To create a dynamic title for each entry, locate the **Entry title pattern** property.
6. Enter a title pattern, for example: `Relative #{panelIndex}`. The `{panelIndex}` placeholder represents the entry's position among all entries. You can also use `{visiblePanelIndex}` to show the entry's position among *visible* entries, which is useful if the entries have dynamic visibility.

<img src="images/eud-binding-10-906.png" alt="Disable manual addition and removal of entries within the Dynamic Panel" width="1544" height="906">

7. Go to the **Data** category and set the same **Join identifier** value you used earlier (i.e., `family`).

<img src="images/eud-binding-8-906.png" alt="Specify a join identifier for the Dynamic Panel" width="1544" height="906">

8. In the **Conditions** category, locate the **Bindings** property.  
9. Select the question whose selected choices should define the number of entries.  

<img src="images/eud-binding-16-910.png" alt="Bind the number of entries within the Dynamic Panel to the number of selected choices" width="1544" height="910">

Preview the form and select items in the first question. The Dynamic Panel will automatically add corresponding entries.

<img src="images/eud-binding-9-910.png" alt="Preview the binding with the Multi-Select Dropdown" width="1544" height="910">

### Pipe Selected Values into Nested Questions of the Dynamic Panel

If a question inside the Dynamic Panel collects the same data as the multi-select question, you can automatically populate it using the selected values. To do this:

1. Select the **Multi-Select Dropdown** question.  
2. In the **Data** category, locate **Store values in the following property**.  
3. Enter a value name (for example, `selected-family-member`).  

<img src="images/eud-binding-11-936.png" alt="Set the value name for Store values in the following property" width="1544" height="936">

4. Select the question inside the Dynamic Panel that should receive the value.  
5. In the **Conditions** category, locate the **Default value expression** property.  
6. Enter the following expression: `displayValue('relatives-source', {panel.selected-family-member})`, where:
   - `displayValue()` is a function that returns the display text of a selected choice.
   - `relatives-source` is the **Question name** of the multi-select question.
   - `{panel.selected-family-member}` references the stored value within the panel.

<img src="images/eud-binding-12-936.png" alt="Set a default value using a selected choice option" width="1544" height="936">

Now, when a respondent selects an option, a new panel entry is created and the corresponding field is filled in automatically.

<img src="images/eud-binding-17-920.png" alt="Preview of selected values piped into a nested question" width="1544" height="920">

## How to Repeat a Group of Questions Based on a Numeric Input

To repeat a set of questions based on a number entered by a respondent in the previous question, follow these steps:

1. Add a **Single-Line Input** question to your form.
2. Set a **Question name (ID)**, **Question title**, and, optionally, a **Question description**.

<img src="images/eud-binding-13-936.png" alt="Add and configure a Single-Line Input question" width="1544" height="936">

3. Set **Input type** to **Number**.  

<img src="images/eud-binding-14-936.png" alt="Set the input type to number" width="1544" height="936">

4. Repeat steps 1-6 from the [Configure the Dynamic Panel](#configure-the-dynamic-panel) section.
5. In the **Conditions** category, locate the **Bindings** property.
6. Select the **Question name** of the Single-Line Input whose value should define the number of entries&mdash;for example, `relative-source`.  

Preview the form and enter a number in the Single-Line Input field. The Dynamic Panel automatically creates that number of entries, so respondents see and complete exactly what is required.

<img src="images/eud-binding-15-936.png" alt="Preview the binding with the Single-Line Input" width="1544" height="936">

## See Also

- [How to Set and Format Dynamic Tab Titles in Dynamic Panel](/survey-creator/documentation/end-user-guide/dynamic-tab-title-format)
- [How to Pipe Selected Choices to a Dynamic Matrix](/survey-creator/documentation/end-user-guide/pipe-selected-choices-to-dynamic-matrix)