Create VM from template , Hostname issue

I created a VM from RHEL ISO Fle, and followed some steps to cleanup nic details and also inserted a systemd script to create machine id. Converted VM to template, However when i spin a new VM with new hostname via template, it has same Hostname as template. Can you please direct what i missed here, I went through lot of documents found online nothing helped me out. New to VMware world.Thanks