declare
    l_business_ref flow_process_variables.prov_var_vc2%type;
    l_prcs_id      flow_processes.prcs_id%type;
begin 
    -- retrieve process id 
    l_prcs_id:= flow_plsql_runner_pkg.get_current_prcs_id;
    -- retrieve business ref
    l_business_ref:= flow_process_vars.get_business_ref(l_prcs_id);
    -- set expense status 
    update tuto_expenses expe set expe.expe_status = 'paid' 
    where expe.expe_id = to_number(l_business_ref);
end;