# String Expressions

String Expressions return a *\<string>*, and each part of the expression is evaluated as a string.&#x20;

When editing an Expression of this type, you have available [Functions ](https://doc.sysdevmobile.com/kalipso5/developing/form/expressions/functions)and all the Kalipso objects from where you can retrieve values ([Global Variables](https://doc.sysdevmobile.com/kalipso5/developing/form/variables), [Controls ](https://doc.sysdevmobile.com/kalipso5/developing/form/controls)and [Local Variables](https://doc.sysdevmobile.com/kalipso5/developing/form/option-window/local-variables)). To use any of these items you just have to double-click it and it will be automatically added to the Expression.

### Examples:

Consider that the value of Input "iProduct" is 1020393.

* *Example 1*

"Product with code <" + CTRL(iProduct) + "> not found!"\
**Result** = Product with code <1020393> not found!

* *Example 2*

"The result of 1 + 2 is " + "1" + "2" + "."\
**Result** = The result of 1 + 2 is 12

* *Example 3*

"The result of 1 + 2 is " + NumToString(1 + 2) + "."\
**Result** = The result of 1 + 2 is 3

{% hint style="info" %}
There are multiple ways to add ENTERs in string expressions, including inside the string itself.

Check the next 3 example:

Example1: **"123" + ENTER + "456"**

Example2: **"123" + CR + LF + "456"**

Example3: **"123**

**456"**
{% endhint %}