Task duration on Google Calendar Integration

You can set a custom event duration from Todoist on a task by task basis by typing something like [80m] into the task name. When you save the task, “[80m]” will be removed from the task name and a new Google Calendar event will be created with a duration of 1 hour and 20 minutes. For now, this will only work using “m” (for minutes).

This is not working for me. When I write [80m], nothing happens. Help guys!