How can I select Layers by ID

[oliverIntergrafika]

My HTML extension panel listening to JSONEvents, like this SELECT:

{ "eventID": 1936483188, "eventData": {"layerID":[2,97],"makeVisible":false,"null":{"_name":"back1.jpg","_ref":"layer"},"selectionModifier":{"_enum":"selectionModifierType","_value":"addToSelectionContinuous"}}}

In the event handler, the script is storing the selected layer's "layerID"s to an array.

How can I select these layers again later by the stored IDs with a .jsx call?

Must be simple, but i can't find a way.

Is it possible to convert the layer ID to Index?

Thanks a lot!

[SuperMerlin · Accepted solution]

selectLayerById(98); //select this layer only
selectLayerById(80,true); //select this layer along with other selected layers

function selectLayerById(id,add){ 
var ref = new ActionReference();
ref.putIdentifier(charIDToTypeID('Lyr '), id);
var desc = new ActionDescriptor();
desc.putReference(charIDToTypeID("null"), ref );
if(add) desc.putEnumerated( stringIDToTypeID( "selectionModifier" ), stringIDToTypeID( "selectionModifierType" ), stringIDToTypeID( "addToSelection" ) ); 
desc.putBoolean( charIDToTypeID( "MkVs" ), false ); 
try{
executeAction(charIDToTypeID("slct"), desc, DialogModes.NO );
}catch(e){}
};

[oliverIntergrafika]

Many Thanks SuperMerlin! It's working fine.