This RPC accepts the name of a variable which will be evaluated and its
Integration Agreement (IA) #1629
value returned to the server. For example, this RPC may be called with
a parameter variable like DUZ which will be returned as 123456.
It should NOT be used to return the value of anything other than a
variable. For example, the RPC should not attempt to return the value of
a global or function call, as these are unsupported uses of the RPC and
are not guaranteed to work consistently.