if (isset($new_node->ExtendedData->Visibility3d->v3Range[$nr]->from)) $old_node->ExtendedData->Visibility3d->v3Range[$nr]->from=$new_node->ExtendedData->Visibility3d->v3Range[$nr]->from;
if (isset($new_node->ExtendedData->Visibility3d->v3Range[$nr]->to))$old_node->ExtendedData->Visibility3d->v3Range[$nr]->to= $new_node->ExtendedData->Visibility3d->v3Range[$nr]->to;