Arcpy save command giving errors

I've been trying to get this to work but for some reason it just keeps failing. Here is a very simplified version of my script:

import arcpy

arcpy.CheckOutExtension("spatial") #Spatial Analyst extension

Raster1 = arcpy.GetParameterAsText(0) #Input Raster

outFill = arcpy.gp.Fill(Raster1) #fill raster

outFill.save(arcpy.GetParameterAsText(1)) #save and output location

I keep getting the following error:

Traceback (most recent call last): File "C:\Users\asd\Desktop\moodle\3Assignment THREEE\script.py", line 12, in outFill.save(arcpy.GetParameterAsText(1)) #save AttributeError: ResultObject: Get attribute save not found

Failed to execute (script)

Can anyone tell me what I'm doing wrong?