title: How do you have a bot add a reaction using a custom emoji?
body: <p>I'm trying to add a custom emoji as a reaction to a message using discord.py version 0.16.12 and I'm unable to get it functional. Here's the code I'm using:</p>
  
  <pre><code>@bot.event
  async def on_message(message):
      if message.content.find(':EmojiName:'):
          await bot.add_reaction(message, '&lt;:EmojiName:#EmojiID#&gt;')
  </code></pre>
  
  <p>I've also tried passing the emoji id as a string similar to discord.js <code>(message, '#EmojiID#')</code>. Am I supposed to pass the <code>add_reaction</code> function an emoji object? And if that's the case, how do I find the specific emoji object from the <code>get_all_emojis</code> function?</p>