%tolower( … )
Dynamically expands the string and returns the lowercase version of it.
The lowercase operation is done using the current locale.
Example
&control.Tmp-String-0 := "CAIPIRINHA"
&reply.Reply-Message := "tolower of %{control.Tmp-String-0} is %tolower(%{control.Tmp-String-0})"
Output
tolower of CAIPIRINHA is caipirinha