New Post: Webmap plugin does not update while changing zoom

Hi,I am new with dot spatial and I have an issue with webmap plugin,I use it with this code

DotSpatial.Plugins.WebMap.WebMapPlugin wm = new Plugins.WebMap.WebMapPlugin();
           wm.App = appManager1;
           
            

            wm.Activate();

It works fine and shows combolist but when I select a layer it just loads an image and does not load anything when I zoom in.It just zoom image and do not load tiles.I do not have any problem with DemoMap and this plugin works fine in that application

Can you help me find my mistake calling this plugin?
thanks a lot