# Show or hide questions

Show, hide or require a question depending on what someone answered above it.

A rule lets one question depend on the answers above it. For example, ask for a company name only when someone says they are a business.

1. **Open the Logic tab.**

   Click the question you want to change and open **Logic**.

2. **Choose a rule.**

   - **Show only if** shows the question when the rule is true, and hides it when it is not.
   - **Hide if** hides the question when the rule is true, and shows it when it is not.
   - **Require if** asks for an answer only when the rule is true. A question that is already required stays required.

3. **Say when it applies.**

   Pick a question above, how to compare its answer, and what to compare it with. Add more conditions if you need them and choose whether **all** of them or **any** of them must be true. A rule can have up to 10 conditions.

## How an answer can be compared

| Question | You can say |
|---|---|
| Text, email | is, is not, contains, is answered, is not answered |
| Choice | is, is not, is answered, is not answered |
| Several choices (multi-select) | includes, does not include, is answered, is not answered |
| Number | is, is not, is more than, is less than, is answered, is not answered |

To compare with the answer to another question instead of fixed words, choose **Use the answer to another question** next to the value.

## Good to know

- A rule can only look at questions **above** the one it belongs to. If there is no question above yet, the Logic tab says so.
- A question that is hidden is not asked, so it cannot be required, and an answer sent for it is dropped.
- The rules are checked on our server too, so they also hold for [your own HTML form](https://form.invoy.in/docs/developer/html-post/).
- Conditional logic is on every plan.

> **Tip:** Put the question that decides first. Rules only look upward, so the question they depend on must come before them.