new_value = g_variant_new_int64(spin_box_->value());
else if (g_variant_type_equal(type, G_VARIANT_TYPE_UINT64))
new_value = g_variant_new_uint64(spin_box_->value());
new_value = g_variant_new_int64(spin_box_->value());
else if (g_variant_type_equal(type, G_VARIANT_TYPE_UINT64))
new_value = g_variant_new_uint64(spin_box_->value());