PoolHandling (GVL)

InOut:

Name	Type	Initial
g_AsyncProperty	AsyncProperty	STRUCT(tnTaskName := POOL_EXTENDER_TASK_NAME, usiTaskPrio := POOL_EXTENDER_TASK_PRIO, udiTaskInterval := POOL_EXTENDER_TASK_INTERVAL)
g_PoolExtender	PoolExtender	STRUCT(itfAsyncProperty := g_AsyncProperty)