Scripting Flattersatz

Der Code, welcher noch eine Version älter ist (2019 glaube ich), lautet wie folgt (ich kann den Anfangs-Post nicht mehr editieren):

#strict on
#target "InDesign";
#include "../_common/helpers.js";

(function() {
	function init() {
		store_measurement_units(doc);
		redraw_off();
	}
	function done() {
		redraw_on();
		restore_measurement_units(doc);
	}

	if (app.documents.length === 0) {
		alert("open a document first");
		return;
	}

	var script_name = remove_file_extension( get_filename($.fileName) );
	var doc = app.activeDocument;

	init();

	var len = app.selection.length;
	if (len === 0) {
		alert("select a text frame first");
		return;
	}
	
	var flatterzone = 15; // %
	var randomness = 0; // %
	var w = new Window("dialog", "settings");
		w.orientation = "row";
		w.alignChildren = "top";

		var main_group = w.add("group");
		main_group.orientation = "row";

			var settings_group = main_group.add("group");
			settings_group.orientation = "column";

				var flatterzone_group = settings_group.add("group");
				flatterzone_group.orientation = "row";
				flatterzone_group.alignment = "right";
					flatterzone_group.add("statictext", undefined, "flatterzone:");
					var e = flatterzone_group.add("statictext", undefined, flatterzone+"%");
					e.characters = 4;
					var slider = flatterzone_group.add("slider", undefined, flatterzone, 0, 100);
					slider.onChanging = function() {
						e.text = slider.value+"%";
						flatterzone = parseInt(slider.value);
					}

				var randomness_group = settings_group.add("group");
				randomness_group.orientation = "row";
				randomness_group.alignment = "right";
					randomness_group.add("statictext", undefined, "randomness:");
					var e2 = randomness_group.add("statictext", undefined, randomness+"%");
					e2.characters = 4;
					var slider2 = randomness_group.add("slider", undefined, randomness, 0, 100);
					slider2.onChanging = function() {
						e2.text = slider2.value+"%";
						randomness = parseInt(slider2.value);
					}

			var btn_group = main_group.add("group");
			btn_group.orientation = "column";
				btn_group.add("button", undefined, "OK");
				btn_group.add("button", undefined, "Cancel");

	if (w.show() == 1) {
		// ok
	} else {
		// cancel
		return;
	}
	
	flatterzone *= 0.01;
	randomness *= 0.01;
	
	create_layer(doc, script_name);

	for (var n = 0; i < len; n++) {
		var sel = app.selection[n];

		if (sel.constructor.name != "TextFrame") {
			alert("selection is not a text frame → ignoring it");
			continue;
		}
		
		var x = sel.geometricBounds[3];
		var y = sel.geometricBounds[0];
		var width = x - sel.geometricBounds[1];

		var pointsize = sel.insertionPoints[0].pointSize;
		var leading = sel.insertionPoints[0].leading;
		if (leading == Leading.AUTO) {
			leading = pointsize * 1.2;
		}
		
		for (var i = 0; i < sel.lines.length; i++) {
			var line_y = y + (0.5 * pointsize) + (i * leading);
			var flatter_width = (width * flatterzone);
			var variance;
			var line = sel.parentPage.graphicLines.add({layer: script_name});
			if (i % 2 == 0) {
				variance = randomness * flatter_width * Math.random();
				line.geometricBounds = [line_y, x, line_y, x - variance];
			} else {
				variance = randomness * flatter_width * ((Math.random() - 0.5) * 2);
				line.geometricBounds = [line_y, x, line_y, x - flatter_width + variance];
			}
	
			line.textWrapPreferences.textWrapMode = TextWrapModes.BOUNDING_BOX_TEXT_WRAP;
			line.strokeColor = doc.swatches.itemByName("Paper");
			line.transparencySettings.blendingSettings.opacity = 0;
		}
	}

	done();
})();

Still doesn't work. I trouble-shot these kind of things already but there's always a new error. I assume someone needed to check the whole code quickly.