Cell Values to NoData

Hi all,

I'm trying to use the SetNull function in Raster Calculator with no results so far:

I have Raster1 and Raster2. Boths Rasters share some pixel cells locations. For those cells that have the same location in Raster1 andRaster2 I need to set those cells to No Data in Raster1.

I've tried with SetNull(Raster1, Raster2, Raster1) but it doesn't do the job.

Any help would be greatly appreciated.

Many thanks

Toni