I have a set of normalized continuous data in SPSS on which I intend to run logistic forward and backward regression. My predictor variables are divided into two categories, quantitative and non-quantitative. I want to put a maximum restriction on the number of predictors falling in the model from each category. And also define a range of minimum and maximum weights (sum of beta coefficients) of each category. Is this something I will be able to achieve using SPSS command syntax?