ListView example code need more interaction

Greeting all,

i am trying to make the listView selection touch --> detail page
the detail page can create an ImageObject, and able to drag
here my code change

  
--setup functions to execute on touch of the list view items  
function listButtonRelease( event )  
 self = event.target  
 local id = self.id  
 print(self.id)  
  
-- weilies, create image  
local myCoffee = display.newImage(data[id].image)  
  
myCoffee:addEventListener( "touch", startDrag )  
 detailScreenText.text = "You tapped ".. data[id].title --added this line to make the right side of the screen more interesting  
 --check for screen width of the iPad  
 if system.getInfo("model") == "iPad" then   
 selected.width, selected.height = self.width, self.height --iPad: set the color fill width and height  
 selected.y = self.y + self.height\*0.5 --iPad: move the color fill to wherever the user tapped  
 selected.isVisible = true --iPad: show the fill color  
 else  
 transition.to(myList, {time=400, x=display.contentWidth\*-1, transition=easing.outExpo })  
 transition.to(detailScreen, {time=400, x=0, transition=easing.outExpo })  
 transition.to(backBtn, {time=400, x=math.floor(backBtn.width/2) + screenOffsetW\*.5 + 6, transition=easing.outExpo })  
 transition.to(backBtn, {time=400, alpha=1 })  
  
 delta, velocity = 0, 0  
 end  
  
  
 -- A basic function for dragging physics objects  
 local function startDrag( event )  
 local t = event.target  
--[[  
 local phase = event.phase  
 if "began" == phase then  
 display.getCurrentStage():setFocus( t )  
 t.isFocus = true  
  
 -- Store initial position  
 t.x0 = event.x - t.x  
 t.y0 = event.y - t.y  
  
 -- Make body type temporarily "kinematic" (to avoid gravitional forces)  
 event.target.bodyType = "kinematic"  
  
 -- Stop current motion, if any  
 event.target:setLinearVelocity( 0, 0 )  
 event.target.angularVelocity = 0  
  
 elseif t.isFocus then  
 if "moved" == phase then  
 t.x = event.x - t.x0  
 t.y = event.y - t.y0  
  
 elseif "ended" == phase or "cancelled" == phase then  
 display.getCurrentStage():setFocus( nil )  
 t.isFocus = false  
  
 -- Switch body type back to "dynamic", unless we've marked this sprite as a platform  
 if ( not event.target.isPlatform ) then  
 event.target.bodyType = "dynamic"  
 end  
  
 end  
 end  
]]--  
 -- Stop further propagation of touch event!  
 return true  
 end  
  
end  
  

but seems like it gave me error below

Copyright (C) 2009-2010 A n s c a , I n c . Version: 1.0.0 Build: 2010.109 The file sandbox for this project is located at the following folder: (/Users/admin/Library/Application Support/Corona Simulator/CoffeeDemo-C2A3DE8306CA6962BDD32F0CEB59F8CA) touch: began highlight touch: ended 2 Runtime error assertion failed! stack traceback: [C]: ? [C]: in function 'assert' ?: in function 'getOrCreateTable' ?: in function 'addEventListener' /Users/admin/Desktop/myCorona/CoffeeDemo/main.lua:64: in function 'onRelease' ...sers/admin/Desktop/myCorona/CoffeeDemo/tableView.lua:119: in function <...sers><br> ?: in function <?:214><br> [import]uid: 10373 topic_id: 3665 reply_id: 303665[/import] </…sers>