Thanks Bryan. I have another idea, if my client wants to have 50-version designs, I would generate more than 50 versions, say 80 versions or 100 versions. Then I export the design. NExt, I select designs which includes only 3 attributes from 80 or 100 versions, and paste them into new CSV file to fulfill the design number of 50-version designs. And use "Import design" function to import the design. So my design will have only 3 attributes. How about this way? Is there any concerns or risks to do so?