Like all variables, the "result" variable is an array too.  You can pass more than one value via the elements of result%function if need to.

In the following example, five result values are returned in one go.  Notes: 1. you can do anything to result%function like you do with other variables without causing a function exit or incurring performance penalty; 2. "{arg%function:function} is the function name, used to access the nameless argument in the calling line.

// Returns sum, first, last, max and min

function give_me_5 {

   var argvar = {arg%function:function};

   if ({#arg%{argvar}} == 0) return;

   var result%function:sum = 0;

   var result%function:first = "{arg%{argvar}|shift}";

   var result%function:last = "{arg%{argvar}|pop}";

   var result%function:max = "{result%function:first}";

   var result%function:min = "{result%function:first}";

   foreach (arg%{argvar}) {

         var result%function:sum conv="+=:{foreach}";

         if ('{foreach}' > '{result%function:max}')

               var result%function:max = {foreach};

         if ('{foreach}' < '{result%function:min}')

               var result%function:min = {foreach};

   }

}

give_me_5 "(array)5,3,2,6,9,7,6,8";

display "{result%give_me_5|list}";

// Output: sum=>'46',first=>'5',last=>'8',max=>'9',min=>'2'

Also, two special purpose variables "status%function" and "message%function" are there for you to pass out error code and error message.  As a de facto standard, 0 status and blank message indicate no error.

Following the previous example, you can set status and message before returning.

// Returns sum, first, last, max and min

function give_me_5 {

   var status%function = 1;  // Assume guilty until proven innocent

   var message%function = "argument not specified";

   var argvar = {arg%function:function};

   if ({#arg%{argvar}} == 0) return;

   var result%function:sum = 0;

   var result%function:first = "{arg%{argvar}|shift}";

   var result%function:last = "{arg%{argvar}|pop}";

   var result%function:max = "{result%function:first}";

   var result%function:min = "{result%function:first}";

   foreach (arg%{argvar}) {

         var result%function:sum conv="+=:{foreach}";

         if ('{foreach}' > '{result%function:max}')

               var result%function:max = {foreach};

         if ('{foreach}' < '{result%function:min}')

               var result%function:min = {foreach};

   }

   var status%function = 0;

   var message%function = "";

}

The last two lines can be replaced by return status=0 message="";