PopUp in Javascript doesn't work properly

     Hi Guru's,

I am facing into an issue.

I created an Adobe interactive forms with a popup for the appraiser feedback.

When I click on the button to open the pop up and write my feedback and then I close it.

Sometimes it happens that my message has not been saved and the forms doesn't go to the next phase.

I should click in second times on the button.

Please find below the code :

function PopupComment()

{

  var info  = xfa.form.DATA.Page1.Texts.comment;

     var title = xfa.form.DATA.Page1.Texts.title_pop;

  var oDlg = { strName: "", initialize: function(dialog) {dialog.load({"usnm":this.strName}); },commit: function(dialog) {

      var data = dialog.store();

  this.strName = data[ "usnm"];},

  description: {

     name: title.rawValue , elements: [ {

        type: "view", elements: [

     { name: info.rawValue , type: "static_text",},

  { item_id: "usnm", type: "edit_text", char_width: 42, char_height: 20, multiline: 3 },

  { type: "ok_cancel", },

  ]

       },]

      }

     };

Do you have an idea or suggestions please?

Thank you in advance for your help.