# Evaluate - script function

Evaluate() finds if the input text string can be evaluated as a valid QlikView expression, and if so, returns the value of the expression as a string. If the input string is not a valid expression, NULL is returned.

Syntax:

Evaluate(expression\_text)

Return data type: dual

Information noteThis string function can not be used in chart expressions.

Examples and results:

Examples and results

| Example | Result |
| --- | --- |
| `Evaluate ( 5 * 8 )` | Returns '40' |