Explore advanced techniques for setting and getting variable values in complex programming systems through this conference talk from Dyalog '23. Dive into common usage scenarios and learn about the challenges of dynamic variable naming. Discover proposed system functions for improved readability and performance, including name-value pairs (⎕NV), getting a name (⎕NG), and setting a name (⎕NS). Examine performance comparisons between error guards and explicit checking. Gain insights into practical applications such as setting default arguments, merging values from multiple namespaces, querying data objects with defaults, constructing namespaces, populating class fields, and converting between tables and namespaces. Conclude with a summary of the draft proposal for these new system functions in APL programming.