How to validate a range in my Flow form?

In this example, the field is valid between 5 and 15.

Step 1 — Build the valid range condition

Drag in the field from the form layout, drag in the ≥ operator, and enter the minimum value, 5. Drag in the AND operator, drag the field in again, drag in the ≤ operator, and enter the maximum value, 15:

(data["Number"]>=5)&&(data["Number"]<=15)

• Dragging in the field from the form layout
  
• Drag in the 'greater than ≥' symbol
  
• Enter the minimum value 5
• Drag in the 'AND' operator
  
• Drag in the number field from the form layout
• Drag in the 'less than ≤' symbol
• Enter the minimum value 15

Step 2 — Set the rule to Valid

Click on the "Valid" word to configure the outcome.

Step 3 — Set the status, colour, and message

Set the Form Status, colour, and a message if needed.

Step 4 — Add the catch-all invalid rule

Invalidate everything outside the valid range:

1==1