Forms. How can I send a hidden parameter to a form in SaveItem (for example, a Cookie or URL parameter)

To do this, use special types of form columns - cookie, localStorage, sessionStorage, and urlParameter

They will not be visible on the page (these are the input[type=hidden] fields). The key name is passed to them as a value on the form (the key name matches the field code).

When saving a form to SaveItem, the value for this key is passed from the corresponding storage. 

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