gtk_entry_set_text (GTK_ENTRY (agg->summary_var_label_entry), label);
gtk_entry_set_text (GTK_ENTRY (agg->summary_sv_entry), srcvar);
gtk_entry_set_text (GTK_ENTRY (agg->summary_var_label_entry), label);
gtk_entry_set_text (GTK_ENTRY (agg->summary_sv_entry), srcvar);