I am writing GUI code using GUIKit and in script i need to import/load/call a file(.nb/.m.xml) containing set of expressions and then output after evaluation of these expressions. I have tried (Import / Get / NotebookOpen) but i think i am making mistake somewhere due to which expression is loading and evaluating. here is my code:

GUIRunModal[Widget["Frame", {
     "title" -> "Calc with Mathematica",

{Widget["Label", {
      "text" -> "First argument:"}], 
  WidgetAlign[],
  Widget["TextField", {
      "columns" -> "20", 
      "horizontalAlignment" -> PropertyValue["RIGHT"],
      BindEvent["action", 
         Script[calculateResults[]]]
      }, Name -> "FirstArgumentField"] }, 

{Widget["Label", {
      "text" -> "Second argument:"}], 
  WidgetAlign[],
  Widget["TextField", {
      "horizontalAlignment" -> PropertyValue["RIGHT"],
      BindEvent["action", 
         Script[calculateResults[]]]
      }, Name -> "SecondArgumentField"]}, 

{WidgetFill[],
  Widget["Button", {"text" -> "Compute",
      BindEvent["action", 
         Script[calculateResults[]]]
      }]},

 Widget["Label", {"text" -> "Results: "}], 

{Widget["Label", {"text" -> "Sum: "}], 
  WidgetAlign[],
  Widget["TextField", {
      "horizontalAlignment" -> PropertyValue["RIGHT"],
      "editable" -> "false"
      }, Name -> "SumField"]}, 

 BindEvent["endModal", 
 Null
    ], 

 Script[
    calculateResults[] := Module[{x, y}, 
         {x, y} = 
    ToExpression /@ 
     PropertyValue[{{"FirstArgumentField", 
        "SecondArgumentField"}, "text"}];

   (* tis contains a having expression in terms of x,y*)
   Import["E:\\iiscnew\\PROJECT\\call.xml", "GUIKitXML"];


   l = a;



   SetPropertyValue[{"SumField", "text"}, ToString[l, InputForm]]; 

         ];
    ]

 }

]]

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