Selecting multiple layers and merge

Question

is it possible to select multiple layers (with layermask) and merge them?
tell application "Adobe Photoshop CS6"
    tell current document
        set current layer to every layer of layer set "bloem 1-9" of layer set "Bloem"
        tell current layer
            merge
        end tell
    end tell
end tell

Answer 1

Yes, for that you have to select the layers that are in the set. Here is one way using javascript
function selectLayerBelow( add ){
    var desc = new ActionDescriptor();
        var ref = new ActionReference();
        ref.putEnumerated( charIDToTypeID( "Lyr " ), charIDToTypeID( "Ordn" ), charIDToTypeID( "Bckw" ) );
    desc.putReference( charIDToTypeID( "null" ), ref );
    if(add!=undefined && add = true )desc.putEnumerated( stringIDToTypeID('selectionModifier'), stringIDToTypeID('selectionModifierType'), stringIDToTypeID('addToSelectionContinuous') );
    desc.putBoolean( charIDToTypeID( "MkVs" ), false );
    executeAction( charIDToTypeID( "slct" ), desc, DialogModes.NO );
// assumes a layerSet the the activeLayer and doesn't work correctly if there are nested layerSets
var numberOfLayersInSet = app.activeDocument.activeLayer.layers.length;
selectLayerBelow();
for(var layerIndex = 1;layerIndex<numberOfLayersInSet;layerIndex++){
    selectLayerBelow( true );
app.activeDocument.activeLayer.merge();