- (void) removeObjects_at_TopoNr_from_LocationRLM :(NSUInteger)TopoNr :(NSString *)folderName :(NSString *)fileName {

    RLMRealm *realm = [RLMRealm realmWithPath:[self get_TopoResultRLM_FilePath :folderName :fileName]];
    RLMResults *resultTopoResult = [RLMTopoResult allObjectsInRealm:realm];

    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"TopoNrRLM == %d", TopoNr];
    RLMResults *resultsTopoNr = [resultTopoResult objectsWithPredicate:predicate];

    if ([resultsTopoNr count] > 0) {
        if (TopoNr <= (int)[resultsTopoNr count]) {
            [realm beginWriteTransaction];
            [realm deleteObject:[resultsTopoNr firstObject]];
            [realm commitWriteTransaction];
        }
        else {
            NSLog(@"Fail...trying to remove TopoResult-object with TopoNr bigger to object-count");
        }
    }
    else {
        NSLog(@"Fail...trying to remove TopoResult-object in empty Realm");
    }
}