How to add layer mask?

Must add each layer of the document (except the background) mask blank:
There is such a script:
if(app.documents.length>0){
    var docRef = activeDocument;
    var layerNum = docRef.layers.length;
    for(var i=0;i<layerNum;i++){
        docRef.activeLayer = docRef.layers[i];
        if(!docRef.activeLayer.isBackgroundLayer){
            try{addMask ()}
            catch(e){}
else{alert('There are no open files')};
function addMask(){
    var idMk = charIDToTypeID( "Mk " );
        var desc2 = new ActionDescriptor();
        var idNw = charIDToTypeID( "Nw " );
        var idChnl = charIDToTypeID( "Chnl" );
        desc2.putClass( idNw, idChnl );
        var idAt = charIDToTypeID( "At " );
            var ref1 = new ActionReference();
            var idChnl = charIDToTypeID( "Chnl" );
            var idChnl = charIDToTypeID( "Chnl" );
            var idMsk = charIDToTypeID( "Msk " );
            ref1.putEnumerated( idChnl, idChnl, idMsk );
        desc2.putReference( idAt, ref1 );
        var idUsng = charIDToTypeID( "Usng" );
        var idUsrM = charIDToTypeID( "UsrM" );
        var idHdAl = charIDToTypeID( "HdAl" );
        desc2.putEnumerated( idUsng, idUsrM, idHdAl );
    executeAction( idMk, desc2, DialogModes.NO );
It runs and adds a mask, but it is filled with black:
How to change the code to create an empty mask (like in the first picture)?
Sorry for my english...

Line 30 you have the actionmanager "HdAl" hide all… Record again using show all…?

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It may be basic but it seems confusing, please I need help

Assuming that the variable myLayer is a layer object, the collection of all its masks is: myLayer.property("ADBE Mask Parade");
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var myMask = myLayer.property("ADBE Mask Parade").addProperty("ADBE Mask Atom");
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Here's what I've got.
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I don't know about others, but it would save me considerable time in the long run if every new layer, (whether it is generated as a copy, from a plug-in, as a cut, or as a new blank layer) recevied an automatic layer mask. It takes no file space, but more often than not I find myself needing one. It sure would be nice to jump right into masking rather than having to first create the layer mask. Why did they stop at adjustment layers?
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If I go to layers in the menu however and select layer mask hide all or reveal all then select my brush it works fine and as it normally did before.
I have tried re installing etc. and every bit of normal advice but nothing works. Can you help or do you know anyone who can. As I am desperate here is my email: [email protected]
thank you

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This is a totally novice question, but...
When working with a layer mask, my paintbrush isn't showing up on the image. I can see the brush strokes on the layer mark in the layers sidebar, but no brush strokes on the image itself.
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I think you are not understanding how layers and layer masks work.
Look at the following illustration. The layers panel shows that the left of the image (The right is simply to make room for the layers panel and should be ignored) has solid blocks of red, green and blue. The layer mask in the top layer (red) has a black rectangle which conceals that area of the layer, revealing the underlying layer.
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Need help translating PS Bloom Tutorial to Elements 8 ~ layer mask

http://photoshoptutorials.ws/photoshop-tutorials/photo-effects/bloom.html
I'm having difficulting translating this PS tutorial into Elements. Could someone familar with elements please take a look at the tutorial and offer guidance?
Thanks in advance!
Credo

Yes, see if the following gives the results your looking for:
1. Steps 1 and 2 are the same.
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4. Step 5 is the same.
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6. Step 8 is the same.
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As Barbara says. This may also help.
http://easymactips.blogspot.com/search?updated-min=2009-01-01T00%3A00%3A00-05%3A00&updated -max=2010-01-01T00%3A00%3A00-05%3A00&max-results=30

How to add layer mask?

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