iOS Creating Paragraphs using CoreText in iphone/ipad

[arnieterm]

Hi all
In order to create multiple paragraph(s) using CoreText do we need to set CTFrameSetter seperately for each paragraph? I am trying to apply settings for various paragraph like alignment, paragraph spacing etc but it does not apply. Though I am successfully able to apply font to them.

CGFloat ls = height;
		CTParagraphStyleSetting setting;
		setting.spec = kCTParagraphStyleSpecifierParagraphSpacing;
		setting.valueSize = sizeof(CGFloat);
		setting.value = &ls;
		CFIndex theNumberOfSettings = 1;		
		CTParagraphStyleSetting settings[1] = {
			//{kCTParagraphStyleSpecifierAlignment, sizeof(alignment), &alignment},
			{kCTParagraphStyleSpecifierParagraphSpacing, sizeof(CGFloat), &ls},			
		};
		//CTParagraphStyleRef paragraphStyle = CTParagraphStyleCreate(settings, sizeof(settings) / sizeof(settings[0]));
		CTParagraphStyleRef paragraphStyle = CTParagraphStyleCreate(settings, theNumberOfSettings);
		
		CFStringRef keys[] = { kCTParagraphStyleAttributeName };
		CFTypeRef values[] = { paragraphStyle };
		CFDictionaryRef paraAttribute = CFDictionaryCreate(
												  NULL, 
												  (const void **)&keys, 
												  (const void **)&values,
												  sizeof(keys) / sizeof(keys[0]), 
												  &kCFTypeDictionaryKeyCallBacks, 
												  &kCFTypeDictionaryValueCallBacks
												  );
		[htmlContent addAttributes:(NSDictionary*) paraAttribute range: applyToRange];
		//CFRelease(paragraphStyle);
		//CFRelease(attr);

here htmlContent is the NSMutableAttributedString. What is wrong with this code? Any idea?
Thanks