Equation/Global Variables driven part tolerances

Hi everyone,

I've been looking around, but can't really find any definitive answer to this, but is it a possibility to automate dimension tolerances within parts, preferably through the global variables and/or equations? Being able to make a variation on an existing drawing, while only adapting the new dimensions and tolerances in one location would be greatly beneficial, and lowering the drawing errors.

Currently working with SW2015, but supplier and support will install 2017 at the end of next week.

SolidworksParts And Features