Skip to main content

How the Logic Add-On Works in Boom Form

Boom Tech avatar
Written by Boom Tech
Updated today

Description
The Logic add-on allows you to make your forms more dynamic and interactive. With logic rules, you can show or hide fields, set multiple actions, and create smart form flows based on user input.

Using the if…then… builder, you can:

  • Create multiple statements.

  • Add one or several conditions in each statement (with AND / OR operators).

  • Add multiple actions in a single statement (e.g., then show…, then hide…).

This article walks you through how the Logic add-on works step by step. Screenshots are included to help you follow along visually.

Step 1 — Open the Logic Add-On

  1. Go to your form in Boom Form.

  2. From the left-hand panel, open Add-ons.

  3. Select Logic.

  4. Click + Add New Statement.

Step 2 — Add Conditions

  1. Inside the statement, click + Add New Condition.

  2. Select the field you want to use for the condition.

  3. Choose the operator (is, is not, greater than, etc.).

  4. Enter the value that should trigger the action.

  5. Add more conditions if needed and connect them with And or Or.

Step 3 — Add Actions

  1. Under THEN, click + Add Action.

  2. Choose what should happen when the conditions are met:

    • Show field

    • Hide field

  3. You can add multiple actions in one statement (for example, Show Field A and Hide Field B).

  4. Review the list of actions to confirm they match your intended form flow.

Step 4 — Publish and Test

  1. The Logic add-on saves automatically — there’s no save button needed.

  2. To test your setup, Publish your form.

  3. Open the published form and try different inputs.

  4. Confirm that each condition triggers the correct actions (e.g., fields appear/disappear as expected).

Step 5 — Manage Multiple Statements

  • You can create multiple statements within the same form.

  • Statements are automatically named in order (Statement 1, Statement 2, Statement 3, etc.).

  • Each statement works independently, but together they control the full logic flow.

  • If two statements affect the same field, test carefully to avoid conflicts.

Exclude Hidden Fields Option

At the top of the Logic add-on, you’ll see the toggle “Exclude hidden fields.”

  • When enabled: hidden fields are not included in logic conditions. This helps avoid conflicts when a field is already hidden and shouldn’t be used to trigger another condition.

  • When disabled: hidden fields can still be used in logic conditions.

👉 Recommendation: keep this enabled in most cases to ensure your logic runs smoothly. Only disable it if you specifically need hidden fields to be part of your conditions.

Tips & Best Practices

  • Start simple — create one condition and one action first, then expand.

  • Combine related actions inside a single statement instead of spreading them across many.

  • Always test on the published form, since logic can only be previewed after publishing.

  • Use the “Exclude hidden fields” option wisely to prevent unintended logic loops.

  • Keep track of statements using the conditions and actions inside each one, since statement names are assigned automatically.

👉 With the Logic add-on, your forms become smarter, more dynamic, and user-friendly. By combining multiple conditions and actions, you can create advanced form flows tailored exactly to your needs.

Did this answer your question?