Create a catalog item ? I am having issues with Validating the Task -(see screenshots)

[GurkirpalG]

Here is the task:

Field consultants need to be able to request items that support the workshops they are facilitating. They must be able to let IT know when the workshop is being hosted and the items required to be successful. 

1. Using the Consulting Practice item template, create a new catalog item named Workshop setup in the Consulting Practice catalog.

  a) Catalogs: Consulting Practice
  b) Category: Workshops

2. Create four mandatory variables to capture workshop date AND time, the workshop location, if a projector is required (yes/no) and the number of chairs required.

  a) The location field should reference locations in the system. [cmn_location]
  b) When asking about a projector, users should only be able to select Yes or No.   
  c) Validate the user is entering in a number when asking for the number of chairs

3. Select the fulfillment method

  a) Flow Designer flow: Service Catalog item request

Here is error:

oes your question text match the requirement as shown in the instructions?

Are each of the variables mandatory? Does the 'Number of Chairs' field require a number entry?

Did you select the proper type for each variable?

[Mark Manders]

You are using a sting field for the number of chairs. That means I can fill in anything. Updating that to an integer could already get you passed it.