I wonder if anyone can help me with a problem. I have created a raster processing model with ModelBuilder in ArcGIS 9.3. Most of the tools I use are from the Spatial Analyst/Math toolbox, with a majority of the inputs as constant values. I have two changeable parameters in the model - a constant value and the output. I have tried a few different ways to iterate the model, using the batch grid command, and setting my variable parameter as a list value or series value. However, with each method I use, I am getting the same exact raster as the output in the different output file names that I specified. I imagine that I am missing a setting somewhere, but which one?