If the standard data types are not suitable for a variable in your process, you can create a new custom complex data type. A complex data type is a collection of attributes, each attribute having a data type.
Complex data types are defined in a JAR or XSD file. Each file can contain more than one definition. To add a new complex data type, create a new JAR or XSD file.
If you are using the Performance, Efficiency, or Teamwork edition, you can also use Bonita BPM Studio to add a new data type: