Work Item Disappear After Execution of Back Button

[Sandy]

Dear all.
I have a workflow task that execute function module. This function module is
execute ALV program which contains couple buttons i.e."Submit", "Decline"
etc.
Below call function module, I have some macro commands that need to be
executed.
I put break-point before execution of function module

When I execute the work item, function module executed and brings me the ALV
screen.
What I expect is after execution of button i.e. "Submit", it's back to my
method and execute macro commands.
Currently this happens only when I click standard SAP "Back" button which is
user doesn't want to

Is there any ABAP command or function module that can tell to the system to
go back to the method caller?
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