How to use modelbuilder to minus raster file from one another?

Discussion created by powerhands on May 30, 2011
Latest reply on Jun 1, 2011 by timothy_hales-esristaff
Hi everyone, i'm trying to build a model to minus raster file from one another.
so i insert the minus from toolbox-3D analyst tools-raster math, and then i need to input two raster files.
the problem is that both raster1 and raster2 are large amount of files, means i have to insert an iterator(see the pic below), but there can only be one iterator in a model, how can i do it? please someone inlight me or an example will be more better, thankyou everyone.