Help writing a Spectral Repair script

Cool :)

Wrt the "Strength up and down" - take a look at the source code of my "iZotope Slider #1 +" script (and related) in the Dialog Editing iZotope package (click View Source on the command once installed). Also quoted here:

function setSliderValueDelta(sliderNum, deltaValue) {

    var moduleWin = sf.ui.izotope.floatingWindows.whoseDocument.isNullOrEmpty.first;
    if (!moduleWin.exists) throw 'Module not found';

    var panel = moduleWin.groups.whoseDescription.contains('EffectPanel').first;
    if (!panel.exists) throw 'Could not find EffectPanel';

    var slider = panel.children.allItems.filter(function(c){ return c.role == 'AXSlider' })[sliderNum - 1];
    if (!slider || !slider.exists) throw 'Could not find slider';

    var intDelta = Math.floor(deltaValue * 10);
    var absDelta = Math.abs(intDelta);

    if (intDelta > 0) {
        for (var i = 0; i < absDelta; i++)
            slider.elementClick({ actionName: 'AXIncrement' });
    } else if (intDelta < 0) {
        for (var i = 0; i < absDelta; i++)
            slider.elementClick({ actionName: 'AXDecrement' });
    }
}

setSliderValueDelta(1, 0.2);

This might help you along the way.