Nested lists and return value

[asfernandes]

When two nested lists are created (say, L1 and L11), in JasperStudio's L11 dataset run it was possible and worked (6.2) to return values to the main's report variables. In fact it was the only way, as it cannot return values to L1's variable.

Now with JasperReports 6.8 library this usage is not compiling, saying the variable does not exists.