When you create a hiperspace and specify a maximum size larger than the initial size, you can use DSPSERV EXTEND to increase the current size as your program uses more storage in the hiperspace. The BLOCKS parameter specifies the amount of storage you want to add to the current size of the hiperspace. The VAR parameter tells the system whether the request is variable. For information about a variable request and help in using DSPSERV EXTEND, see Extending the current size of a data space.