# URL Param

## Description:

### Allowed Parent Components:

1. Open URL

### Allowed Child Components:

1. Trigger Before Render

### Properties

### ➤ Param Name

Specify the name of the to be appended to the URL. i.e. headerId will be appended as <https://cloudio.io?lineId=1&headerId=12345>. Note: ? will be appended to the URL before appending the params if the URL doesn't already contains ?

Allowed Values: Free text field

### ➤ Value Expression

Specify an expression that should be evaluated to a string or number depending on the target attribute

Allowed Values: Specify an expression that should be evaluated to a string or number depending on the target attribute


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# 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://docs.cloudio.io/ui-components/widgets/invokeurlparammapping.md?ask=<question>
```

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.