Update line height of UILabel in storyboard

gistfile1.m

@implementation UILabel (Extensions)

...

- (void)setLineHeight:(float)lineHeight
{
    NSMutableParagraphStyle *paragrahStyle = [[NSMutableParagraphStyle alloc] init];
    paragrahStyle.minimumLineHeight = lineHeight;
    paragrahStyle.maximumLineHeight = lineHeight;
    NSMutableAttributedString *attributedText = [[NSMutableAttributedString alloc]
                                                 initWithString:self.text];
    [attributedText addAttribute:NSParagraphStyleAttributeName
                           value:paragrahStyle
                           range:NSMakeRange(0, attributedText.length)];
    self.text = nil;
    self.attributedText = attributedText;
}

...

@end