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# Scale tests from your IDE

You can scale up your tests on other OpenText Performance Engineering solutions, without leaving your IDE.

In this topic:

## About scaling a test from your IDE

DevWeb tests that are run within OpenText Performance Engineering for Developers are limited to a maximum of 50 Vusers. You can scale up your DevWeb tests to a larger number of Vusers, by running the script on other OpenText Performance Engineering solutions. These test runs can be executed directly from any IDE.

To run this integration, you use the CLI tool, ScalUP (previously called ScaLRD), included in the deployment package. In your IDE, you define a task to run ScalUP for your DevWeb script, and run the test on the relevant product.

Tip: You can get help within your IDE on usage, available flags, and examples. Run a command in the IDE using the following argument: `ScalUP --help`

Parameters for the tests are configured in the relevant <product>_uploader YAML file. For example, you can define the number of Vusers to run.

For details, see the relevant topics:

- Run tests on OpenText Core Performance Engineering
- Run tests on OpenText Enterprise Performance Engineering

For an example of using ScalUP, see Scale your test from VS Code.

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## Mask and encrypt data

If the cor_uploader.yml or ent_uploader.yml file for your script includes a password or other sensitive data, you can mask or encrypt the information in the file.

Mask or encrypt the relevant text as described in Encode sensitive data. Then add the encoded strings to the YAML file, using the relevant syntax:

Purpose: | Syntax:
--- | ---
Unmask a masked value | `Unmask(<masked_data>)`
Decrypt an encrypted value | `Decrypt(<encrypted_data>)`

For encrypted data, define the key location for decryption during replay. In the encryption area, define the property keyLocation using the format: "folder/keyFile.txt".

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See also:

- Run scripts
- Run scripts

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