2a: By using the component that is used in the console as wel, or develop your own component
But.. there is a more simple way ? like the getBytes("processoimage.jsp" ... directly from standard jpdl api?No
Will be implements in a future release?It is not on the list, but that does not mean it will not happen.
If it is possible to define this additional properties... how can I get it from jpdl api?
You can by turning of schemavalidation (removing the declaration) or adding it to elements that support anyType (see the xsd for that)
You can then load the processdefinition.xml file the same way you load the image and make a dom out of it. After that you can retrieve the elements
do you know the name / java source name of that component (to get the task/process instance image) ?
for 2.b) so the standard jdpl designer doen't support it directly?
like you described above for the image