Stamp not working in Reader

Question

Hello,
Please, help me find what I'm doing wrong.
I have done a dynamic stamp that displays a dialog to collect data from several input fields and then fills the stamp's template with the info collected.
The thing is that the stamp works fine in Acrobat 9 Standard, but when I apply the stamp with Acrobat reader XI the dialog prompts requesting the input fields but the template is not filled. I mean, all "fields" in the picture remain blank.
In the Adobe Reader Java Console I get this erro when apliying the stamp.
Exception in line 192 of function top_level, script 0
InvalidGetError: Get not possible, invalid or unknown.
Doc.layout:192:App Promocion:Calculate
This is the code of the stamp:
var dlgDatos = {
vpromocion: "",
vpartida1: "",
vpartida2: "",
vpartida3: "",
vpartida4: "",
vpartida5: "",
vpartida6: "",
vporciento1: "",
vporciento2: "",
vporciento3: "",
vporciento4: "",
vporciento5: "",
vporciento6: "",
vobservaciones: "",
commit:function (dialog)
{ // called when OK pressed
    var results = dialog.store();
          this.vpromocion = results["prom"];
          this.vpartida1 = results["par1"];
          this.vpartida2 = results["par2"];
          this.vpartida3 = results["par3"];
          this.vpartida4 = results["par4"];
          this.vpartida5 = results["par5"];
          this.vpartida6 = results["par6"];
          this.vporciento1 = results["por1"];
          this.vporciento2 = results["por2"];
          this.vporciento3 = results["por3"];
          this.vporciento4 = results["por4"];
          this.vporciento5 = results["por5"];
          this.vporciento6 = results["por6"];
          this.vobservaciones = results["obse"];
  description:
    name: "Stamp Information",  // Dialog box title
    elements:
          {type: "view",
            elements:
            name: "Promoción: ",
            type: "static_text",
            item_id: "prom",
            type: "edit_text",
            width: 180
      {type: "view",
        elements:
          {type: "view",
            align_children: "align_row",
            elements:
            name: "Partida ",
            type: "static_text",
              width: 120,
            name: "% ",
            type: "static_text",
              width: 120,
           {type: "view",
            align_children: "align_row",
            elements:[
          {item_id: "par1",
            type: "edit_text",
            width: 120},
          {item_id: "por1",
            type: "edit_text",
            width: 120},
           {type: "view",
            align_children: "align_row",
            elements:[
          {item_id: "par2",
            type: "edit_text",
            width: 120},
          {item_id: "por2",
            type: "edit_text",
            width: 120},
           {type: "view",
            align_children: "align_row",
            elements:[
          {item_id: "par3",
            type: "edit_text",
            width: 120},
          {item_id: "por3",
            type: "edit_text",
            width: 120},
           {type: "view",
            align_children: "align_row",
            elements:[
          {item_id: "par4",
            type: "edit_text",
            width: 120},
          {item_id: "por4",
            type: "edit_text",
            width: 120},
           {type: "view",
            align_children: "align_row",
            elements:[
          {item_id: "par5",
            type: "edit_text",
            width: 120},
          {item_id: "por5",
            type: "edit_text",
            width: 120},
           {type: "view",
            align_children: "align_row",
            elements:[
          {item_id: "par6",
            type: "edit_text",
            width: 120},
          {item_id: "por6",
            type: "edit_text",
            width: 120},
            name: "Observaciones: ",
            type: "static_text",
          {item_id: "obse",
            type: "edit_text",
              multiline:true,
              height:60,
            width: 250},
          {type: "ok_cancel",
            ok_name: "Aceptar",
            cancel_name: "Cancelar"
if(event.source.forReal && (event.source.stampName == "#Nn99tcN5Jn2Kqw75dj2kzB"))
  if ("ok" == app.execDialog(dlgDatos))
    var cMsg = dlgDatos.vpromocion;
    event.source.source.info.exhibit = dlgDatos.vpromocion;
    event.value = cMsg
          this.getField("Partida1").value = dlgDatos.vpartida1;
          this.getField("Porciento1").value = dlgDatos.vporciento1;
          this.getField("Partida2").value = dlgDatos.vpartida2;
          this.getField("Porciento2").value = dlgDatos.vporciento2;
          this.getField("Partida3").value = dlgDatos.vpartida3;
          this.getField("Porciento3").value = dlgDatos.vporciento3;
          this.getField("Partida4").value = dlgDatos.vpartida4;
          this.getField("Porciento4").value = dlgDatos.vporciento4;
          this.getField("Partida5").value = dlgDatos.vpartida5;
          this.getField("Porciento5").value = dlgDatos.vporciento5;
          this.getField("Partida6").value = dlgDatos.vpartida6;
          this.getField("Porciento6").value = dlgDatos.vporciento6;
          this.getField("Observaciones").value = dlgDatos.vobservaciones;
Thank you.

Answer 1

I have fixed it.
I removed this line of code
event.source.source.info.exhibit = dlgDatos.vpromocion;
And now is working.