Get random values from an array

Question

I defined a new variable

Name        Value            Description
categories  (1, 2, 3, 4, 5)  my categories ids

and in my path i want to

Answer 1

__StringFromArrayAtRandomindex is not part of JMeter core nor part of JMeter plugins.

Is it a custom function ?

Furthermore, you have a syntax error (there is a missing ) at end:

${__StringFromArrayAtRandomindex('1', '2', '3', '4', '5')}

To do the same thing, use a CSV Data Set which will contain:

1
2
3
4
5

Set:

Variable Names=categoryId

You can then use it like this:

${categoryId}