# React to a Message
This action block will react with an emoji to any message in the builder or a specific message.
## Target Message
From this dropdown you can select what type of message the block should target in order to react to.
{% tabs %}
{% tab title="Message sent by another action" %}
If this type is chosen then you may select a block from the builder to be targeted for the reaction.
## Response Action
Pick the message action you want reactions to be added to from this menu.
{% endtab %}
{% tab title="Specific message ID" %}
When this type is selected, it will allow you to choose a specific message to add a reaction to in your discord server by specifying the IDs.
### Channel ID
In this field is where you input the channel ID of where the message is located to target it. This field also only accepts a plain channel ID with no extra symbols or spaces / [variables](https://documentation.botghost.com/custom-commands-and-events/variables).
### Message ID
In this field is where you input the message ID of the message you want to react to. This field also only accepts a plain message ID or a [variable](https://documentation.botghost.com/custom-commands-and-events/variables) that contains one.
{% endtab %}
{% endtabs %}
## Reactions
In this section is where you can choose and apply which reactions will be added to the targeted message. Click the "+" icon to add the reactions. This field only allows you to add default emojis.
## Additional Reactions
Since you can't pick custom emojis from the [#reactions](#reactions "mention") field, this input allows you to add custom reactions to the message. Separate the reactions with commas and you can learn more about how to input a custom emoji [here](https://documentation.botghost.com/getting-started/standard-practices/advanced-practices#how-can-i-get-a-custom-emojis-id).
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