[NextPerception]

instead of

      if ( Button1 == 1 )
      {
            Target = 200 ;
      }
      else if ( Button2 == 1 )
      {
            Target = 400 ;
      }
      else if ( Button3 == 1 )
      {
            Target = 600 ;
      }

i would do this

      if ( (Button1 * Button2) + (Button2 * Button3) + (Button3 * Button1) + ( Button1 + Button2 + Button3 ) == 1 )   //prevents crazy values if more than one button is pressed and keeps the same value if no button is pressed
      {
            Target = (Button1 * 200) + (Button2 * 400) + (Button3 * 600)
      }

this just makes more sense to me and I just post it here for any like minded people out there. I think it takes a little less cpu time too.