THE Error OF GP server on flex

yanli

i  made a GP server. i run successfully in  IE .
but it failed in flex

my code like this

var str:String="E:\data\ConnectionAreaport.sde\sde.SDE.New_Shapefil";
 var str1:String="E:\data\ConnectionAreaport.sde\sde.SDE.STATE";
 var param:Object={"TT":str1,"EE":str}
   
 GP.execute(param);

the error in log:
process="7248" thread="6852">Executing (ModErese): ModErase E:dataConnectionAreaport.sdesde.SDE.STATE E:dataConnectionAreaport.sdesde.SDE.New_Shapefil E:\Data\yanli4.shp Start Time: Tue Oct 19 11:03:58 2010 Executing (Calculate Value): CalculateValue '%TT%' "D:\Program Files\ArcGIS\DeveloperKit\SamplesNET\data\AirportsAndGolf\New_Shapefile.shp" "Feature Layer" "D:\Program Files\ArcGIS\DeveloperKit\SamplesNET\data\AirportsAndGolf\New_Shapefile.shp" Start Time: Tue Oct 19 11:03:58 2010 Value = E:dataConnectionAreaport.sdesde.SDE.STATE Executed (Calculate Value) successfully. End Time: Tue Oct 19 11:03:58 2010 (Elapsed Time: 0.00 seconds) Executing (Calculate Value (2)): CalculateValue '%EE%' # "Feature Layer" "D:\Program Files\ArcGIS\DeveloperKit\SamplesNET\data\AirportsAndGolf\STATE.shp" Start Time: Tue Oct 19 11:03:58 2010 Value = E:dataConnectionAreaport.sdesde.SDE.New_Shapefil Executed (Calculate Value (2)) successfully. End Time: Tue Oct 19 11:03:58 2010 (Elapsed Time: 0.00 seconds) Executing (Erase): Erase E:dataConnectionAreaport.sdesde.SDE.STATE E:dataConnectionAreaport.sdesde.SDE.New_Shapefil E:\Data\yanli4.shp # Start Time: Tue Oct 19 11:03:58 2010 ERROR 000622: Failed to execute (Erase). Parameters are not valid. ERROR 000732: Input Features: Dataset E:dataConnectionAreaport.sdesde.SDE.STATE does not exist or is not supported ERROR 000732: Erase Features: Dataset E:dataConnectionAreaport.sdesde.SDE.New_Shapefil does not exist or is not supported Failed to execute (Erase). End Time: Tue Oct 19 11:03:58 2010 (Elapsed Time: 0.00 seconds) Failed to execute (ModErese). End Time: Tue Oct 19 11:03:58 2010 (Elapsed Time: 0.00 seconds)</Msg>

yanli

var str:String="E:\data\ConnectionAreaport.sde\sde.SDE.New_Shapefil";
//error  is here
when i Export the str is " E:dataConnectionAreaport.sdesde.SDE.New_Shapefil  "

how do i Export "\"