Convert to Smart Object

I am trying to get the active layer to convert to a smart object via script.

After using the script listener to get the text from clicking the context menu on the active layer to "convert to smart object", I got these lines:

// =======================================================

var idinvokeCommand = stringIDToTypeID( "invokeCommand" );

    var desc20 = new ActionDescriptor();

    var idcommandID = stringIDToTypeID( "commandID" );

    desc20.putInteger( idcommandID, 2980 );

    var idkcanDispatchWhileModal = stringIDToTypeID( "kcanDispatchWhileModal" );

    desc20.putBoolean( idkcanDispatchWhileModal, true );

executeAction( idinvokeCommand, desc20, DialogModes.NO );

// =======================================================

var idnewPlacedLayer = stringIDToTypeID( "newPlacedLayer" );

executeAction( idnewPlacedLayer, undefined, DialogModes.NO );

But when I try to run the same lines from ESTK, it says "Genral Error" this operation may not be supported in this version of Photoshop...

What am I doing wrong? Thank you for any wisdom.