AppleScript Control over Curves Adjustment Layer

Here is a sample of a pre-built Curves Layer Adjustment. It should make some sense. In this you can see how to set 5 curve points and adjust the composite channels with the option of grouping the layer to a previous one.

tell application "Adobe Photoshop CS2"

activate

set Doc_Ref to the current document

tell Doc_Ref

set {ah, av, bh, bv, ch, cv, dh, dv, eh, ev, group} to {0, 0, 63, 53, 124, 127, 192, 204, 255, 255, true}

set myJS to "AdjustCurvesLayer();

// The Adjustment Layer Recorded Function

function AdjustCurvesLayer() {

  function cTID(s) { return app.charIDToTypeID(s); };

  function sTID(s) { return app.stringIDToTypeID(s); };

    var desc1 = new ActionDescriptor();

        var ref1 = new ActionReference();

        ref1.putClass( cTID('AdjL') );

    desc1.putReference( cTID('null'), ref1 );

        var desc2 = new ActionDescriptor();

        desc2.putBoolean( cTID('Grup'), " & group & " ); // Group to previous layer boolean

            var desc3 = new ActionDescriptor();

                var list3 = new ActionList();

                    var desc4 = new ActionDescriptor();

                        var ref2 = new ActionReference();

                        ref2.putEnumerated( cTID('Chnl'), cTID('Chnl'), cTID('Cmps') ); // Comosite Channels

                    desc4.putReference( cTID('Chnl'), ref2 );

                        var list4 = new ActionList();

                            var desc5 = new ActionDescriptor();

                            desc5.putDouble( cTID('Hrzn'), " & ah & " ); // Point 1

                            desc5.putDouble( cTID('Vrtc'), " & av & " ); // Point 1

                        list4.putObject( cTID('Pnt '), desc5 );

                            var desc6 = new ActionDescriptor();

                            desc6.putDouble( cTID('Hrzn'), " & bh & " ); // Point 2

                            desc6.putDouble( cTID('Vrtc'), " & bv & " ); // Point 2

                        list4.putObject( cTID('Pnt '), desc6 );

                            var desc7 = new ActionDescriptor();

                            desc7.putDouble( cTID('Hrzn'), " & ch & " ); // Point 3

                            desc7.putDouble( cTID('Vrtc'), " & cv & " ); // Point 3

                        list4.putObject( cTID('Pnt '), desc7 );

                            var desc8 = new ActionDescriptor();

                            desc8.putDouble( cTID('Hrzn'), " & dh & " ); // Point 4

                            desc8.putDouble( cTID('Vrtc'), " & dv & " ); // Point 4

                        list4.putObject( cTID('Pnt '), desc8 );

                            var desc9 = new ActionDescriptor();

                            desc9.putDouble( cTID('Hrzn'), " & eh & " ); // Point 5

                            desc9.putDouble( cTID('Vrtc'), " & ev & " ); // Point 5

                        list4.putObject( cTID('Pnt '), desc9 );

                    desc4.putList( cTID('Crv '), list4 );

                list3.putObject( cTID('CrvA'), desc4 );

            desc3.putList( cTID('Adjs'), list3 );

        desc2.putObject( cTID('Type'), cTID('Crvs'), desc3 );

    desc1.putObject( cTID('Usng'), cTID('AdjL'), desc2 );

    executeAction( cTID('Mk  '), desc1, DialogModes.NO );

};"

do javascript myJS show debugger on runtime error

end tell

end tell