SAP WorkFlow - Dead Line Monitring

Dears

            Good  Day ,

I implemented my first work flow for vacation request

the workflow contain 2 line of approval

if the first manger approved the work item transferred to the next manager

so i want if the approver doesn't approve the leave within specified time is should be escalated to the next approver

i used dead line monitoring (Latest End) but i can't capture the agent correctly for rule 00000168

for more clarification kindly find the below screen shot

in the branch of approving , i set the agent as below

in the branch of processing obsolete how can get the responsible manger .

Thanks and best regards