GtkWidget *dep_sel = get_widget_assert (xml, "psppire-selector1");
GtkWidget *dep_sel2 = get_widget_assert (xml, "psppire-selector2");
GtkWidget *dep_sel3 = get_widget_assert (xml, "psppire-selector3");
GtkWidget *dep_sel = get_widget_assert (xml, "psppire-selector1");
GtkWidget *dep_sel2 = get_widget_assert (xml, "psppire-selector2");
GtkWidget *dep_sel3 = get_widget_assert (xml, "psppire-selector3");