To create a new shared variable, call the JagNewSharedData or JagNewSharedDataByIndex routine. These routines create a shared variable value initialized to NULL. JagNewSharedData creates a new shared variable or returns a reference to an existing shared variable by name. JagNewSharedDataByIndex creates a new shared variable or returns a reference to an existing shared variable by index number. A shared variable created by index can only be retrieved or updated by index. Similarly, a shared variable created by name can only be retrieved or updated by name. Since a reference is returned, you do not need to follow these routines with the JagGetSharedData or JagGetSharedDataByIndex routine.
For both routines, *pExists is set to:
JAG_TRUE if the shared variable does not exist
JAG_FALSE if the shared variable exists
