And one more problem. I tried to calculate raster values in next way: I have a raster with some values. I add to a model Calculate statistic tool, then Get raster properties tool. So as a result I have a variable that contains raster datasets mean value. Then I add Raster calculator tool and build a simple expression ("%My raster%">%Mean% ) to define the cells witch are greater than mean value. But the error appears. What's wrong in that case?