> For the complete documentation index, see [llms.txt](https://assetstore.essentialkit.voxelbusters.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://assetstore.essentialkit.voxelbusters.com/features/sharing/playmaker/use-cases/use-case-3-sms-challenge.md).

# SMS Challenge Invite

## Goal

Check if messaging is available, then open the message composer with a pre-filled invite.

## Actions used

* `MessageComposerCanSend`
* `MessageComposerShow`
* `MessageComposerGetError` (optional)

## Variables

* `canSendText` (Bool)

## Flow

1. State: `CanSendMessage`
   * Action: `MessageComposerCanSend`
   * Events:
     * `canSendEvent` → `ShowMessageComposer`
     * `cannotSendEvent` → show “Messaging not available”
2. State: `ShowMessageComposer`
   * Action: `MessageComposerShow`
   * Inputs:
     * `recipients` (optional)
     * `body` (invite text)
   * Events:
     * `closedWithSentEvent` → Sent
     * `closedWithCancelledEvent` → Cancelled
     * `closedWithUnknownEvent` → Unknown (optional handling)
     * `closedWithFailedEvent` → `MessageComposerGetError` (optional) then show error

## Notes

* `MessageComposerResultCode.Unknown` can occur on platforms that don’t provide a definitive result.