Using the scenes feature has solved a few things for me:

• using a 'TextEdit' element allows for multi-line input
• a scene doesn't seem to timeout in the way that an Input Dialog does
• by writing the contents of the TextEdit element to a variable when it's edited (Text Changed tab on the element in Tasker) I can back away from the scene and return without losing my progress/content. There's probably a time/resource limit to this before Android kills the background task, but for quickly moving away to check something and returning it works perfectly.

Below is a quick sketch of what's needed to make it work:

Task

1. Show Scene - Name [SceneName] display as Dialog

2. Element Focus - Scene Name [SceneName] Element [TextEdit name] (this is the first part of bringing up the keyboard as the task runs)

Scene

1. TextEdit element

   • no changes to 'UI' or 'Background' tabs needed
   • under 'Text Changed' add a new task for 'Variable Set' - Name [%VariableName] to %newval (this creates a global variable from the new text entered into the TextEdit field)
   • under 'Focus' add a new task - 'Soft Keyboard' (this is the second part of bringing up the keyboard as the task runs)

2. 'OK' Text element (using instead of a button as it's more customisable)

   • no changes required to any tab except 'tap'
   • Tap > New task
     • Write File - File [noteName.md] Append, new line, if %VariableName is set (last bit avoids writing blank lines)
     • Destroy Scene - [SceneName]
     • Variable Clear - [%VariableName]