Replace schematic design variable SKILL

In our analog design flow, our designers utilize design variables in their schematics during the design process to help with optimization. These variables can appear at the top-level or in sub-cells of the hierarchy. Once the design is finished, designers have two options: 1. Go back and manually update all instances that use variables with the correct values. This is a manual error-prone step 2. Save the design variables to the cellview property bag and hope that works with the rest of the design flow I'm currently looking into a third option, where I automate the "hardening" of the design variables at the end of optimization by use of a SKILL script that can go through the hierarchy and replace the variables with fixed values. Before I re-invent the wheel, I wanted to know if there are any other ways to deal with this issue or if someone had already created a solution for this problem. I'm guessing this is a common problem for anyone utilizing variables for optimization, so would be grateful for any input with regard to best practices or SKILL suggestions