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The highlighted yellow area represents the Mode checkbox, with unchecked indicating Basic Mode and checked indicating Regex Mode.

Default mode is Basic, checking the box switches to Regex. Multiple mapping rows can be added.

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In Basic Mode, users can freely input data within curly braces "{value}" into the Pattern Field. Please visit  Include Pagevisit 'How to add Rules with Basic PatternHow to add Rules with Basic Pattern' to know more on Basic Mode.

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In Regex Mode, users can utilize regular expressions in the Pattern Field. Please visit Include Page'How to add Rules with Regex pattern?How to add Rules with Regex pattern?' Page to know more on Regex mode.

You can refer 'Regex Helper' Module to know about how to validate your regular expressions.

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