didats

-(BOOL) validateCivilID:(NSString *)civilID {
    bool valid = false;
    
    NSString *regex = @"[0-9]{12}";
    NSPredicate *test = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
    
    if ([test evaluateWithObject:civilID]) {
        
        double test = 11 - (([[civilID substringWithRange:NSMakeRange(0, 1)] integerValue] * 2) +
                            ([[civilID substringWithRange:NSMakeRange(1, 1)] integerValue] * 1) +