Documented module parameter reference limitation

Signed-off-by: Botond Baranyi <botond.baranyi@ericsson.com>
Change-Id: I7d35a0c2a459772806e28d5839786925c1ef326e

usrguide/referenceguide/7-the_run-time_configuration_file.adoc

@@ -115,7 +115,7 @@ The parameter value can be one of the following:
 * Compound value with value list notation. Comma separated list of values between brackets for types `record of`, `set of` and `array`.
 * Compound value with indexed list notation. One or more fields with field index and value for types record of and set of
 * Compound value containing a template list. Can be a value list, complemented value list, superset and subset list.
-* Reference to a module parameter (or a field/element of a module parameter). Its syntax is the same as the left hand side of a module parameter assignment/concatenation (except the symbol ‘*’ cannot be used to specify all modules). The reference is substituted with the current value of the specified module parameter (its value prior to the execution of this module parameter assignment/concatenation). References can also appear in the expressions specified above (integer and float references can appear in arithmetic expressions, references to string types can be concatenated with other strings of the same type). A dynamic test case error is displayed if the referenced module parameter is unbound.
+* Reference to a module parameter, or a field/element of a module parameter (only in the Function Test runtime). Its syntax is the same as the left hand side of a module parameter assignment/concatenation (except the symbol ‘*’ cannot be used to specify all modules). The reference is substituted with the current value of the specified module parameter (its value prior to the execution of this module parameter assignment/concatenation). References can also appear in the expressions specified above (integer and float references can appear in arithmetic expressions, references to string types can be concatenated with other strings of the same type). A dynamic test case error is displayed if the referenced module parameter is unbound.
 
 Nested compound values are permitted in arbitrary depth. In compound values with assignment and value list notations the "-" symbol can be used to skip an element. In value list notation for record of and set of permutation lists can be used.