Using the StringToNumber function and Perl

I just noticed the StringToNumber(String) function within the Sawtooth Software help under SSI Script, but not under the Perl help?

Is this on purpose?

Or should we be using the alternative Perl function ...

# String type 
$string1 = "27"; 
  
# conversion of string to int  
# using typecasting int() 
$num1 = int($string1);