is there a way to extract the maximum storage capacity of battery?

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Hi,

I am working on an optimization project using jEPlus and jEPlus+EA, the idea is to optimize the maximum storage capacity of the battery in kWh to reduce CO2 and cost. I defined the battery object using the ElectricLoadCenter:Storage:Simple module in IDF file, and the required maximum storage capacity is the optimization variable @@sizing@@, I was wondering if there is a way to extract this value in the results extraction part in jEPlus so that I can define the objective function related to this parameter.

Thanks in advance!