⬜ No Reverse

The No / Invert block allows you to invert a Boolean value (True/False).

This block is essential for creating negative logic conditions, such as checking that a condition is not met before performing an action.

📥 Entries

• value (Boolean): The Boolean value to invert, which may come from a condition or a variable.

📤 Outings

• value (Boolean): The inverted value (True becomes False, False becomes True).

💡 Example of use

Scenario: Prevent access to a secure area without a badge

1. A user attempts to open a secure door.
2. The system checks if the variable aBadge is True (the user has a valid badge).
3. The value of aBadge is connected to the value input of the No block.
4. The output of the No block is linked to a condition that triggers an alert.
5. Behavior:

• If aBadge = False (no badge), the No block returns True → the alert is triggered.
• If aBadge = True (valid badge), the No block returns False → access is authorized.

⚙️ Technical Details

• Logic operation: Pure inversion (!value in programming), compatible only with Boolean data.
• Error handling: If a non-Boolean value is provided, the block returns False by default.

Updated on: 04/03/2026