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# Guide to targeting with JEXL
For a more in-depth explanation of JEXL syntax you can read the [Normady project docs](https://mozilla.github.io/normandy/user/filters.html?highlight=jexl).
## How to write JEXL targeting expressions
A message needs to contain the `targeting` property (JEXL string) which is evaluated against the provided attributes.
Examples:
```javascript
{
"id": "7864",
"content": {...},
// simple equality check
"targeting": "usesFirefoxSync == true"
}
{
"id": "7865",
"content": {...},
// using JEXL transforms and combining two attributes
"targeting": "usesFirefoxSync == true && profileAgeCreated > '2018-01-07'|date"
}
{
"id": "7866",
"content": {...},
// targeting addon information
"targeting": "addonsInfo.addons['activity-stream@mozilla.org'].name == 'Activity Stream'"
}
{
"id": "7866",
"content": {...},
// targeting based on time
"targeting": "currentDate > '2018-08-08'|date"
}
```