SMS Alert: Doing it by Js and python

After some trial and error - this is what seems to work for me:

frappe.ui.form.on("Sales Order", "on_submit", function(frm){
		frappe.call({
               	method: "frappe.core.doctype.sms_settings.sms_settings.send_sms",
               	args: {
                   receiver_list: [frm.doc.contact_mobile],
                   msg: "Your Order "+[frm.doc.name]+" for the amount $"+[frm.doc.grand_total]+" has been received",
               	},
         })
});