Shared Memory-Enabled Classes 
In the shared objects memory, only instances of classes can be stored that were defined using the
... SHARED MEMORY ENABLED
addition of the
CLASS ... DEFINITION
statement, or with which the Shared memory-enabled property is activated in the Class Builder.
Note
The static attributes of a shared memory-enabled class are not saved in the shared memory but in the internal session of a program. If different programs access the same shared objects, the static attributes of the corresponding classes exist multiple times and independently from each other in the programs.