__Random

Also documented in context in the full Functions and Variables reference.

TL;DR: __Random returns a random integer between a min and max value — the simplest way to add variety to a request (random product ID, random delay, random page number) without a CSV file.

The random function returns a random number that lies between the given min and max values.

Name	Required	Description
Minimum value	Yes	A number
Maximum value	Yes	A bigger number
Variable Name	No	A reference name for reusing the value computed by this function.

Examples:

\${__Random(0,10)}

will return a random number between 0 and 10

\${__Random(0,10, MYVAR)}

will return a random number between 0 and 10 and store it in MYVAR. \${MYVAR} will contain the random number

Example

${__Random(0,10)}            → a random number between 0 and 10
${__Random(1000,9999,pin)}   → stored in variable "pin" too

For weighted or larger datasets, a CSV Data Set Config usually models real traffic more accurately than a uniform random range.

Related

• Functions and Variables Guide
• Regex Extractor Builder
• CSV Data Set & Parameterization
• Full Functions Reference
• Component Reference