Python Programming --> adjustment to existing code -- 2

I am in need of a Python Programmer to help make a small adjustment to my existing code to help a financial trading backtester iterate through columns of a dataframe for optimization. I currently have the ability to optimize a variable called "target" however i need help adding the functionality to optimize through multiple columns + the target variable. The backtesting library is designed to iterate through each row with the "next" function of the class. See attached screenshots. This involves a python class and proper handling of a variable which references columns of the dataframe to allow calculation by row.

The backtesting software is here: https://kernc.github.io/backtesting.py/

Documentation on optimizing is here: https://kernc.github.io/backtesting.py/doc/examples/Quick%20Start%20User%20Guide.html

Another page of helpful documentation is here: https://kernc.github.io/backtesting.py/doc/examples/Parameter%20Heatmap%20&%20Optimization.html