Original User: JSkinn3Hi Jamal,I don't believe there is a way to auto populate this parameter. You can easily accomplish this in python, though. Here is an example:import arcpy from arcpy import env env.workspace = r"D:\Practical1_AddingData\Data" for raster in arcpy.ListRasters("*.jpg"): arcpy.ProjectRaster_management(raster, raster + "_project.jpg", "GEOGCS['GCS_Palestine_1923',DATUM['D_Palestine_1923',SPHEROID['Clarke_1880_Benoit',6378300.789,293.4663155389802]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]]","NEAREST","0.0000025","Palestine_1923_To_Israel_1","#","GEOGCS['GCS_Israel',DATUM['D_Israel',SPHEROID['GRS_1980',6378137.0,298.257222101]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]]")
The above code will iterate through the 'D:\Practical1_AddingData\Data' directory and reproject each JPG to a new JPG with the same name, just with "_project" added to it.