Outdated TYPO3 Version
This documentation refers to an outdated TYPO3 version - either select a supported version or make sure to use a TYPO3 Extended Long Term Support (ELTS) version to continue getting security updates.
Sometimes a data type is defined as having a modifier. This is typically a function that can be used additionally.
The complex data type TEXT has a property “value” which is defined as having a simple data type “string” with the optional type modifier “stdWrap”: