# Custom Function

## Create New Custom Function

**Step 1:** On Create/ Edit Customer Journey screen, click on icon **Personalization** and select **Add Personalization**.

**Step 2:** On **Add Personalization** pop up, click on **Personalization type** dropdown, select **Custom**.

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXeuJhEN0RqRh3RC8qs9C2GnLAh7y5vxndeBUeg-xsx-13UC127wq8eI5rFqvDLe1VcgQkUCXHNjjfHZ_SmNwnj-dquyWuXsn5lE0EYEWFMMZCrA2OTHyPyYRImkonP2XGE53Q3K6lE8OHmxWYNaXGg3BNhZ?key=McWN_Lv9ZK-QuQzVrY3nVw" alt=""><figcaption></figcaption></figure>

**Step 3:** Enter custom function name in **Personalization Name** field. You can also click on Personalization Name field and select previously created custom functions from the suggestion list

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXdYartMlJvtqQ_aDyf5J6Ts1AKM_xi8g7--Cu8fB5o5BrOw63IaheqTqdvFtQ-t-cuQMWiCH206fI-6o_1otfgy0xR9KFzboVAkeJXzBHDJHO41bjlp4bqSE_mj0KRgiXDvOjptIkDe5ZQYID9FNqU2-NY?key=McWN_Lv9ZK-QuQzVrY3nVw" alt=""><figcaption></figcaption></figure>

**Step 4:** Insert you function you want into **Function** field.

***Note:** Only support **JSON** function.*

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXfUAMbjeC08OK8kupi4oIC7N0zoOerFeaDZcBS48B9vtFbB8kK8jvjcwl2N7mllAfZSRqqyj-BmI0M1etVJzURSVHx6kWCq1SU2W1I8sTUi4zbxRSDbTIiM9DnnbqqJV5DX1BlKA94_CKNpnyj4Ic0n91U0?key=McWN_Lv9ZK-QuQzVrY3nVw" alt=""><figcaption></figcaption></figure>

**Step 5:** Choose the appropriate data type and display style for your function in the Out put Data Type field and Output Format

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXe3ok5E_l8TWHpxJFpsh5avJky5BmQ9eKpZckL2ykXlghZ3jvtw50lIq7PvEgbNe2k7z-tx_R59AMU45m0vBzMgD0mzPixPGYfIN1Z6j8o9Yv1G6oraIIeSuyoHUXtVAXE0kGw9fAx6u8S6ws42fUP9-EVR?key=McWN_Lv9ZK-QuQzVrY3nVw" alt=""><figcaption></figcaption></figure>

**Step 6:** Optional, if you want to reuse this function, you can save as this function become a template by check on **Save as template** checkbox.

***Note:** After saving as a template, your function will display in the list of suggestions when clicked and enter the function name in the **Personalization name** field.*

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXdI-zfOcSh9iGsILQ2W5As5ghbYpDzgUoTNIK66VPSr-k0AI6F2csKOJNz2Fj6j1lsUHm-_m7fregJ__4PRZha1sjt1anIuAr_nqLFpFGge8gUiTCtrbibjC8PI08AAKtWj0v1V5LD1DYEVBAvlT_FsVujV?key=McWN_Lv9ZK-QuQzVrY3nVw" alt=""><figcaption></figcaption></figure>

**Step 7:** Click **Insert** to add your function into Content. After click, your function will display as tag

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXdOKXmo8IM0pg1yX1Szcnll-k8LdeXjJd5_4UZsgulHyGQO2m1Uci_WBtNTRZQDStGAixAU68qZ4N1FF263TE9W1-yMRlkPIXhhiDA7Ti7UaTCHjaIsobjlwHSwpWhiZTGqDFdCY8K3bxQoCNfpBtvAPnCa?key=McWN_Lv9ZK-QuQzVrY3nVw" alt=""><figcaption></figcaption></figure>

## Edit Custom Function

If you want to edit your function, you can click on **function's tag**. Add Personalization pop up will display and you can edit your function. After editing, click **Update** to update the edited content.&#x20;

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXdMjEoy3he2Y9H4lYffvoCQBf6-3dnBwnkuWHrdrvXuOP0YSES6hj_VFtA53p758W8FUvf5vVWOeOBG6wbmWjcGsJPTfv9xHJxSQOeWLAhmwc4Ef30_QqamWxPnTZIyATevnT2j5ZjxOljbV-aUGBOWGpx6?key=McWN_Lv9ZK-QuQzVrY3nVw" alt=""><figcaption></figcaption></figure>


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