Ansible with Regex to change the lines

line_regex.yml

---
- name: Deploy dbserver
  hosts: all
  user: root

  pre_tasks:

  vars :
   - Dest : /etc/ansible/facts.d/sojourner.fact

  pre_tasks:

  - name : Check if {{Dest}} exist's
    stat: path={{ Dest }}
    register: st

  - replace : dest={{ Dest }}  regexp='Product=((?!{{Product}})[\w\s]+)\n'  replace="Product={{Product}} \1\n"
    when:  st.stat.exists is defined and st.stat.exists==True
  - replace : dest={{ Dest }}  regexp='Role=((?!{{Role}})[\w\s]+)\n'  replace="Role={{Role}} \1\n"
    when:  st.stat.exists is defined and st.stat.exists==True

  - lineinfile : dest={{ Dest }}  regexp='\[setup\][\n]Product=[\w\s]*[\n]Role=[\w\s]+'  line='[setup]\nProduct={{Product}}\nRole={{Role}}' create=yes mode=644
    when:  st.stat.exists is defined and st.stat.exists==False

  handlers:
  - name: re-read facts
    setup: filter=ansible_local