Random String parameter is used to generate a random string of characters with a random length.

## Adding Random String Parameter

The following fields need to be filled to add the Random String Parameter:

#### Parameter Details

- Name : This field is used to define the name of the variable associated with the current parameter. Valid parameter names can have only alphabets and underscore (_).
- Character Set : Define the character set from which Load Test generates a random string. Users can use a-z, A-Z, and 0-9 and their sub-sets. Their combination can also be used e.g. b-e1-3. In this case, the string generated is from b, c, d, e, 1, 2, and 3 characters only
- Minimum Value: Specify the minimum length of the string. It can range from 0-10,000.
- Maximum Value: Specify the maximum length of the string. It can range from 1-1,000,000.
- Sample Output : Once we fill the above fields, the sample output is automatically populated based on the details.

## Advanced

#### Updated Value On

This field is used to indicate Load Test when to generate a new string i.e. generate once and use this value for the entire session, or, generate a string every time Random String Parameter is used.Users can have the following option:

- Session : Random string is generated only for the first use of the Random String Parameter. Then, for the entire script, the same value is used.
- Use : Random string is generated for each use of the Random String Parameter. For example, if the Random String parameter is used 50 times in the script, then for every reference, a new random string is generated.