For example like in Excel, "My String" + "Is this" to "My String is This." This is for gpl only, not naming heroes.

On the fly:

$AddAttribute (thisagent, "hero_type", "string", thisagent's "Type"); // This will make an attribute for hero type, where the type will be the string name for the hero.
$AddAttribute (thisagent, "hero_type2", "string", $Concatenate(thisagent's "Type", "s"); //This will add an "s" at the end of the herotype, to differenciate from the first hero_type, used for the "Foreach" command and lists.