The SetHash function creates a hashmap of a set of selected elements.
The key is the element specified in the second parameter. \
The GetHash function then returns the corresponding element from the above selection for a given hashmap + key.

SetHash('selection', 'Key', 'Name of the hashmap')

GetHash('Name of the hashmap', 'Key')

In this example, a hashmap is created using a series of SG_33 nodes, with the /LIN/@DE_1028 attributes serving as the key for each node. GetHash returns the /SG_33 node with the @DE_1028 attribute value 18089.

SetHash(//SG_33,'LIN/@DE_1082','hash1')

GetHash('hash1','18089')