params.headers.Range = "bytes=0-10"--this can't work,why?

local myText = display.newText("(Waiting for response)", 0, 0, native.systemFont, 16)
myText.x = display.contentCenterX
myText.y = 120

local function networkListener( event )
if ( event.isError ) then
myText.text = “Network error!”
else
myText.text = “See Corona Terminal for response”
print ( "RESPONSE: " … event.response )
end
end

local params = {}
params.headers = {}
params.headers.Range = “bytes=0-10”

– Access Google over SSL:
network.request( "http://www.ztdg.net/import_old/01304000021.sis ", “GET”,networkListener, params )
[import]uid: 29364 topic_id: 10817 reply_id: 310817[/import]