In Service Portal, even if a variable's Choice direction field is set to Across, the choices still display vertically.

1. Navigate to Service Catalog > Catalog Definitions > Maintain Items and select a catalog item.

2. Under Related Links, go to Variables and click New.

3. Create a variable with the following values:

   Type: Multiple Choice
   Type Specifications: Across
   Name: Test Layout
   Question: Placeholder text

4. Scroll to Question Choices and create at least two question choices using the following method:

   1. Click New.
   2. Provide text and a value.
   3. Click Submit.

5. Click Update.

6. View the item in the Service Portal.

   Note the choices are displayed vertically rather than horizontally.

This is expected behaviour in the current releases. The Service Portal was not designed to mirror every layout option of the Service Catalog in the normal UI.

Please submit an enhancement request from the Self-Service portal for possible future consideration.