Modify Adjustment Layer without selecting it? (Scripting)

[connywallstrom]

Is there no way to target a layer with layerindex or reference to alter the adjustment layer? I really don't want to select it first because it makes the script slow and jumping all over the layer stack while processing.

Everything I try just gives me errors on the setd.

This is an example of what I want to do, but without selecting the layer:

var ref1 = new ActionReference();
ref1.putEnumerated(cTID('AdjL'), cTID('Ordn'), cTID('Trgt'));
var desc1 = new ActionDescriptor();
desc1.putReference(cTID('null'), ref1);

var desc2 = new ActionDescriptor();
desc2.putInteger(cTID('Rd '), 1);
desc2.putInteger(cTID('Yllw'), 2);
desc2.putInteger(cTID('Grn '), 3);
desc2.putInteger(cTID('Cyn '), 4);
desc2.putInteger(cTID('Bl '), 5);
desc2.putInteger(cTID('Mgnt'), 6);
desc2.putBoolean(sTID("useTint"), false);
desc1.putObject(cTID('T '), cTID('BanW'), desc2);
executeAction(cTID('setd'), desc1, DialogModes.NO);

[c.pfaffenbichler · Accepted solution]

Instead of 

ref1.putEnumerated(cTID('AdjL'), cTID('Ordn'), cTID('Trgt'));

make it

ref1.putIndex( charIDToTypeID( "AdjL" ), 5 );

and obviously insert the correct Index-number. 

[c.pfaffenbichler]

But as the index could change with the adding, removing, changing the order of Layers it mght be better to use the identifier to target the Layer, that »sticks«. 

[r-bin]

ref1.putName(stringIDToTypeID("adjustmentLayer"), "Black & White 1");

or
ref1.putIdentifier(stringIDToTypeID("adjustmentLayer"), activeDocument.artLayers[0].id);

P.S. Missing spaces in your code, e.g. in cTID('Rd ')

[connywallstrom]

Very nice and quick response! Thanks guys! I swear I tried exactly this, but I must have missed something. It now works! YAY!