How Can We Add Multi Select Dropdown Filters In Custom Script Report

let say I want multiple companies(selected) sales report. How can I add a multi-select dropdown? can you help with this I can’t find any solution to this query @rmehta

thanks
Sumanth

Try this one in your reports js file.

		{
		"fieldname":"party",
		"label": __("Party"),
		"fieldtype": "MultiSelectList",
		"reqd": 1,
		get_data: function(txt) {
			if (!frappe.query_report.filters) return;

			let party_type = frappe.query_report.get_filter_value('party_type');
			if (!party_type) return;

			return frappe.db.get_link_options(party_type, txt);
		},
		on_change: function() {
			var party_type = frappe.query_report.get_filter_value('party_type');
			var parties = frappe.query_report.get_filter_value('party');

			if(!party_type || parties.length === 0 || parties.length > 1) {
				frappe.query_report.set_filter_value('party_name', "");
				frappe.query_report.set_filter_value('tax_id', "");
				return;
			} else {
				var party = parties[0];
				/*var fieldname = erpnext.utils.get_party_name(party_type) || "name";
				frappe.db.get_value(party_type, party, fieldname, function(value) {
					frappe.query_report.set_filter_value('party_name', value[fieldname]);
				});*/

				if (party_type === "Customer" || party_type === "Supplier") {
					frappe.db.get_value(party_type, party, "tax_id", function(value) {
						frappe.query_report.set_filter_value('tax_id', value["tax_id"]);
					});
				}
			}
		}
	}

Source: https://github.com/logedosoft/ERPNext-Turkish-Delight/blob/master/erpnextturkish/erpnext_turkish/report/cari_ekstre_ozet/cari_ekstre_ozet.js