Calling Z Transaction from standard transaction in Personas 2

Hello all,

In one of my requirement, I am making a call to Document flow from a Z transaction. In order to get to the document flow, I have created a button on my custom screen. On click of this button, i have written bdc to display the document flow for that order. Now, I want to go back to my Z transaction when i hit back. But this is not working.

I also tried creating a custom push button but am lost.

Any help is appreciated.

Thanks,

Salil