# JSON encode transform function
## Introduction
The **JSON encode** transform function is encode incoming values as JSON. For example, you might have product data in a string:
{% code lineNumbers="true" %}
```json
{"last_fruit":"apples"}
```
{% endcode %}
...and need to encode the values for pushing to the destination system:
{% code lineNumbers="true" %}
```json
{"last_fruit":"\"apples\""}
```
{% endcode %}
{% hint style="info" %}
Although this is listed as a string type transform, in fact any data type can be encoded.
{% endhint %}
## Adding a last word transform
**Step 1**\
In your process flow, access settings for your map shape:
**Step 2**\
Select the **add transform** icon for the required mapping rule - for example:
**Step 3**\
Click the **add transform** button:
**Step 4**\
Click in the **name** field to access a list of all available transform functions, then select **JSON encode** from the **string** category:
**Step 5**\
Click the **add field** button:
**Step 6**\
Click in **source fields** and select the source field to be used for this transform:
**Step 7**\
Accept your changes:
**Step 8**\
Save the transform. You'll notice that the transform icon is updated to indicate that a transform function is present for the mapping row - for example:
