Hi,
I understand that you are getting an error when pressing the stop button in an application created with the app designer.
On inspecting the '.mlapp' file that you have shared, following line results in the error:
app.stopEditField.Value=1;
The reason why you are gettin the error, Unrecognized method, property, or field 'stopEditField' for class 'Resp'. is because the application Resp doesn't have any object, stopEditField. You will have to add this object either through properties or from the Component library.
Based on the name, it appears that stopEditField is a Edit Field in the component library. You can add the Edit Field and name it accordingly as shown in the following screenshot.
You will also have to change 1 to a string in order to update the Edit Field
app.stopEditField.Value="1";
