Call Webdynpro from fiori app using fiori frame work page

Hi Experts,

How to call the Webdynpro application(within shell) inside a Master detail fiori app.

In detail view, we are trying to call the WDA using buttons in footer as shown in below screen shot.

In FLP, when i use the cross application navigation using below logic, it works but our requirement is from FFP.

var crosAppNav = sap.ushell.Container.getService("CrossApplicationNavigation");

crosAppNav.toExternal({ target: { semanticObject: "EMP_EMERGENCY", action: "edit" } });

Please let me know.

Thanks,

Aneel.C