I want to use the nonlinear platform to estimate a parameter (2 actually) in a model. I know how to do this in straightforward models. The twist here is that I want this parameter to influence two columns with formulas - one column is used as an input to another, but the parameters are used in both columns. Is there a way to optimize the parameters taking into account that they influence two different predictor expressions (one is an input to the other)? Unfortunately, when I define a parameter to use in one predictor column, it is not available to use the same parameter in another column - it looks like I would need to define a different parameter in each column and then only optimize using one predictor column rather than have it affect both simultaneously.
Help will be appreciated.
