This show in an older version only. It have been replaced by the one I show you. If you need this code, you can add these snippets into My snippets and then you will have them.
// delete symbol
// create symbol
var variableName = sym.createChildSymbol("symbolName", "Stage");
// set variable
// get variable
var myVariable = sym.getVariable("myVariableName");
You will have most of the others in this new version
Let me know what snippets you need and I can post them for you.
Thank you, that's very helpful!