NSMutableAttributedString - BOLD

- (NSMutableAttributedString*) subtitle:(NSString*)pString
{
    NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:pString];
    NSRange selectedRange = NSMakeRange(0, 6); // 6 characters, starting at index 0
    [string beginEditing];
    [string addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"Helvetica-Bold" size:12.0] range:selectedRange];
    [string endEditing];
    
    return string;
}