&& treeNode.getParent().getValue() instanceof Sequence){
deleteResult = CdmStore.getService(IOccurrenceService.class).deleteSingleRead(((SingleRead)element).getUuid(),
((Sequence) treeNode.getParent().getValue()).getUuid());
&& treeNode.getParent().getValue() instanceof Sequence){
deleteResult = CdmStore.getService(IOccurrenceService.class).deleteSingleRead(((SingleRead)element).getUuid(),
((Sequence) treeNode.getParent().getValue()).getUuid());