The condition Match Regex checks the input value for a specific field against a defined regex pattern; e.g., check whether the input is a valid email address or product code, and deny access until this information is correct. This condition also applies the Regex to the value in the provided fieldpath and allows either to validate the value (regex validation) or to generate an output. Extract the Product Code from the filename and use it in the following transformations, e.g., apply tags for product attributes.