Can I Add Customer Fields That Are Nullable in Table FAGLFLEXT and FAGLFLEXA

Hi experts,

We are adding a customer field to the coding block and executing the step: Including This Field to Totals Table in SPRO. We found the customer field we added to FAGLFLEXT and FAGLFLEXA is set to be NOT NULL with initial value space(' ') . Can we set the customer field nullable when executing Include Fields in Totals Table?

Thank you!