MakeSelectedTextDynamic.jsx

// This script was written by CarlosCanto. I make no claim to this idea or code. I'm posting it here so I have easy access to it for my work -maile thiesen 8/4/2016

#target illustrator  
  
// script.name = makeSelectedTextDynamic.jsx;  
// script.description = makes SELECTED text Dynamic, creates Variables;  
// script.required = one document with at leas one textFrame;  
// script.parent = CarlosCanto // 2/15/13  
// script.elegant = false;  
  
var idoc = app.activeDocument;  
var sel = idoc.selection;  
for (i=0; i<sel.length; i++) {  
      var itext = sel[i];  
      if (itext.typename=="TextFrame") {   
          var idocvar = idoc.variables.add();  
          idocvar.kind = VariableKind.TEXTUAL;  
          itext.contentVariable = idocvar;  
      }  
}