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Selection block (radio / checkboxes)

Updated 2026-06-22

The Selection block shows options as clickable cards. Visitors pick one, or several, and the chosen values feed your spreadsheet. This article covers single vs. multiple selection, showing values, images and card format, and bulk import.

What it does

A Selection renders its options as a grid of cards. Each option has a label and a numeric value. By default the visitor picks one option (like radio buttons). Turn on multiple selection and they can pick several (like checkboxes), in which case Numio sends the sum of the selected values to your assigned cell.

Adding one

  1. In the Build tab, click + Add in the input area and choose Selection.
  2. Click the block to open its settings.

Settings

Formula

In the Formula group, click Assign to bind the block to a spreadsheet cell. See Assigning input blocks to cells.

General

The General group has the shared title, description, tooltip, block spacing, and background controls (see Common block settings), plus:

  • Multiple selection — when on, visitors can select more than one option, and the sum of all selected values is sent to the cell. When off, selecting an option replaces the previous one.

Options

  • Show Value — display each option's numeric value on its card.
  • Image — attach an image to each option. See Images on options.
  • Card Format — when images are on, lay each option out as a card with the image stacked above the label. With Card Format off, image options sit beside their label instead.
  • Number Format and Currency — control how option values display. See Number formats.
  • Options — the list of choices. Use the inline editor or Table View with search and CSV import.

Single vs. multiple

  • Single (default): one selection at a time; its value is sent to the cell.
  • Multiple: any number of selections; the sum of their values is sent. Use this for "select all that apply" inputs where each choice adds to a total.

Building and importing options

Add options inline, or open Table View for a fuller editor. To create many options at once, use Import CSV in Table View. See Importing options from CSV.

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