# Computed parameters The value of computed parameters are defined using c#-code. It is still sent as it's *kind*, if it is a query parameter, it is sent as a query parameter. But the value is calculated in code and the parameter will no longer appear as an input parameter in a machine step using the corresponding operation. The return value is always a string (represented by the variable 'returnValue', see examples below). The c# code runs in a sandbox with no access to file system, network and is limited to use the same assemblies as a [model transform](/6.12/development/flow-studio/connectors/communication/rest-service/rest-project-tool/model-transform.md). All non-computed parameters that isn't constants of the operation are available, as well as the output of required operations and any configuration parameters. ![](/files/-MA1byo8q3bwvIeG5_O3) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://help.novacuraflow.com/6.12/development/flow-studio/connectors/communication/rest-service/rest-project-tool/operations/parameters/computed-parameters.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.