MDT TS within Config manager 2012

Hi ,

I am creating MDT TS ( 'Create MDT Task Sequence' )  in Config manager 2012, just want to know if I need to use MDT variables or config manager 2012 variables if needed to perform some functions using variables during deployment? for e.g. if I need to define computer name, do I need to use variable as 'OSDComputerName' or 'Computername'?

Regards,