Observe Field in roku

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Observe Field in roku
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• Observe field is the most important part of
  brightscript language -We can use observe field
  in several places like-
• 1 ) In any Interface field we can use observe
  field like when data come then callback function
  will run.2 ) In any button when we click on that
  button then callback function will run .3 ) In
  every xml element group, button and all we can
  use observe field.
• In Roku development, the observeField function is
  used to monitor changes in the value of a field
  within a component's associative array. This is
  particularly useful in scenarios where you want
  to update the UI or perform certain actions based
  on changes to specific data.
• https//erpsolutions.oodles.io/developer-blogs/Obs
  erve-Field-in-roku/

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• Considerations
• Ensure that the field you're observing is part of
  the component's associative array (m in the
  example). If it's not, the observation won't
  work.
• Be mindful of memory usage, especially when
  observing multiple fields or in components with
  frequent updates. Unregister observations when
  they're no longer needed to avoid memory leaks.
• Observe Field take 2 parameter field first one is
  name or attributes on any xml element and
  interface element and seconds one is callback
  funciton if any changes occur in first part then
  callback function will fire automatically.