Calling subscreen with the help of Global Class Event

Hello Everybody

Greetings

Currently I am working in a project in which I have created a global class and a driver program which is a module pool in which i have maintained my screens and calling this global class. There is a navigation tree in a screen and when user double click on any option of this navigation tree, in background my double click event get triggered which is maintained in my global class, so my query is how i can pass the subscreen value from my global class event to the driver program as every double click calls different subscreen. basically i want to know is there any way to export any value from global event to driver program.

Thanks and Regards

Virendra Singh Somwanshi