You can do so for example in my project I have 1.25 Gb/s rate by clicking Generate Script, the script that will be generated it will ta with a rate of 1.25 Gb/s as you can see:
Set Canvas1 = Layout1. GetCurrentCanvas
‘ SCRIPT is global Layout parameters.
Layout1. SetParameterMode “Simulation window”, 0
Layout1. SetParameterValue “Simulation window”, Set “bit rate”
Layout1. SetParameterMode “Reference bit rate”, 0
Layout1. SetParameterValue “Reference bit rate”, TRUE
Layout1. SetParameterMode “Bit rate”, 0
Layout1. SetParameterValue “Bit rate”, 1.25 and + 009
Now going in changing global parameters for 10 GB/s now clicking Generate Script
Set Canvas1 = Layout1. GetCurrentCanvas
‘ SCRIPT is global Layout parameters.
Layout1. SetParameterMode “Simulation window”, 0
Layout1. SetParameterValue “Simulation window”, Set “bit rate”
Layout1. SetParameterMode “Reference bit rate”, 0
Layout1. SetParameterValue “Reference bit rate”, TRUE
Layout1. SetParameterMode “Bit rate”, 0
Layout1. SetParameterValue “Bit rate”, 1e + 010
This helps?