Migrating Adobe Flex web application to Adobe AIR package application

As support for Adobe Flex is ending in 2020, we are migrating Adobe Flex web application into Adobe AIR standalone application
as steps below
Creating certificate

./adt -certificate -cn SelfSigned 1024-RSA sampleCert.p12 samplePassword

Creating AIR application

./adt -package -keystore ./sampleCert.p12 -storetype pkcs12 -target bundle AIRApp.app App-descriptor.xml App.swf

In many places we make call to ExternalInterface like below

ExternalInterface.call("window.location.search.toString");

and exception is thrown 

Error: Error #2067: The ExternalInterface is not available in this container. ExternalInterface requires Internet Explorer ActiveX, Firefox, Mozilla 1.7.5 and greater, or other browsers that support NPRuntime.
	at Error$/throwError()
	at flash.external::ExternalInterface$/call()

Is there a way to enable ExternalInterface in Adobe AIR?