Typica/config/Windows/editfee.xml

<window id="invoicefeedetail">
	<layout type="vertical">
		<layout type="grid">
			<row>
				<column><label>Description</label></column>
				<column><line id="description" /></column>
			</row>
			<row>
				<column><label>Cost</label></column>
				<column><line id="cost" validator="numeric"/></column>
			</row>
		</layout>
		<button name="submit" type="push" id="submit" />
	</layout>
	<program>
		<![CDATA[
			window = this;
                        var invoiceID = 0;
			this.windowTitle = TTR("invoicefeedetail", "Typica - Fee Detail");
			var descField = findChildObject(this, 'description');
			var costField = findChildObject(this, 'cost');
			this.dataSet = function() {
				descField.text = window.rowData[2];
				costField.text = window.rowData[7];
                                invoiceID = window.invoiceID;
			};
			button = findChildObject(this, 'submit');
			button.clicked.connect(function() {
				var query = new QSqlQuery();
				query.prepare("UPDATE invoice_items SET description = :name, cost = :cost WHERE invoice_id = :id AND record_type = 'FEE' AND description = :oldname AND cost = :oldcost");
				query.bind(":name", descField.text);
				query.bind(":cost", Number(costField.text));
				query.bind(":id", Number(invoiceID));
				query.bind(":oldname", window.rowData[2]);
				query.bind(":oldcost", window.rowData[7]);
				query.exec();
				query = query.invalidate();
				window.close();
			});
		]]>
	</program>
</window>