This is the scene I'm trying to render. Can someone tell me how should
I modify so that the reflected light would be visible in the media?

#version Unofficial MegaPov 0.4;

#include "colors.inc"
#include "textures.inc"

#declare UsePhotons=yes;
global_settings
{
  max_trace_level 6
#if(UsePhotons)
  photons
  { count 20000
    autostop 0
    media 100
  }
#end  
}

media
{ intervals 10
  scattering { 1, rgb .5 extinction .01 }
  method 3
}

sphere
{ 0,70 inverse
  pigment
  { bozo color_map { [0 rgb 0][1 rgb <1,.5,0>] }
    scale <5,10,5>
  }
} 


camera { location -z*20 look_at 0 angle 35 }

light_source
{ <50,2,0> 1
  spotlight point_at y*2 radius .5 falloff .6
}
light_source
{ <100,100,-100>*.3 .8 media_interaction off
#if(UsePhotons)
//  photons { reflection off refraction off }
#end
}

#declare MirrorBox=
union
{ difference
  { box { <-.5,-1.8,-1.8><.1,1.8,1.8> }
    box { <-.1,-1.5,-1.5><.11,1.5,1.5> }
    pigment { DMFWood4 }
  }
  box
  { <-.1,-1.5,-1.5><0,1.5,1.5>
    pigment { rgb 0 }
    finish { reflection 1 diffuse 0 ambient 0 }
#if(UsePhotons)
    photons
    { target
      refraction off
      reflection on
      ignore_photons
    }
#end
  }
}

object
{ MirrorBox
  rotate z*-45
  translate <-3,2,0>
}
object
{ MirrorBox
  rotate z*45
  translate <-3,-2,0>
}

box
{ <-.5,-1.5,-1.5><0,1.5,1.5>
  pigment { Cherry_Wood scale .5  }
  rotate z*180
  translate <4,-2,0>
}

sphere
{ 0,1.3 scale <.3,1,1>
  pigment { rgbf <.7,.9,1,.9> }
  finish { specular .5 reflection .1 }
  interior { ior 1.5 }
  translate <2,-2,0>
#if(UsePhotons)
    photons
    { target
      refraction on
      reflection on
    }
#end
}

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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