datamanager.py

                    var = Variable(line)
                    if not var.short_name:
                        continue
                    for old_name in line[0].split(':'):
                        Variable._dict_variables[old_name] = var
                    Variable._dict_variables[var.short_name] = var
            return Variable.get_variable(original_name)

        except KeyError:
            Log.error('Variable {0} is not defined'.format(original_name))
            return None