iOS Webservice Results to Array - ios

Question

I use a webservice to take information. When I take string result, I can not write it into an array.
In foundCharacters when I write NSLog(#"%#",string); it writes all values correctly but when I write:
[myArray addObject:string];
NSLog(#"%#",myArray);
I see lots of nulls. How can I take these values and write them into an array :(
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
[datawebservice setLength:0];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
[datawebservice appendData:data];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection{
xmlparserr = [[NSXMLParser alloc] initWithData:datawebservice];
[xmlparserr setDelegate:self];
[xmlparserr parse];
}
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
elementyedek = elementName;
}
-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
}
-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
if ([elementyedek isEqualToString:#"StokAdi"]) {
[myArray addObject:string];
NSLog(#"%#",myArray);
}
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
NSLog(#"ERROR with theConnection");
}