cant login to livecd made by livemedia-creator in lorax package

i've installed the lorax package under rhel7.1 which enable me to custom create live cd.
i followed the documentation and tried to made some changes according to my need and especially changes that might enable me to login with root user or other user i create along the process.

but no matter what i do or configure after the process has created the livecd iso and i boot with it i can't seem to login with root or any other user for that matter.
in general and without getting into too much tech details for now: i configured the /usr/share/doc/lorax-19.6.51/rhel7-minimal.ks file and changed the root password and in general tried all kind of staff but no matter what i do login to console does not work for me.

did anyone succeed of creating a custom live cd and login with root user.
am i missing something here?

documentation link:
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Installation_Guide/sect-disk-image-installation-automatic.html