我在理解Bluebeam中的stamps API时也遇到了麻烦。对我来说，一个很大的帮助是偶然接触到Adobe Javascript API reference。这些stamps的大多数API都是Adobe标准的一部分。它不是Bluebeam特有的。
我将您的代码恢复为Bluebeam网站上提供的custom stamp template的参考代码。
计算脚本

// WARNING: DO NOT EDIT
// SEE GLOBAL JAVASCRIPT SECTION FOR CUSTOMIZATION

if (event.source.forReal) {
  var stampDialog = CreateDialog(builder);
  app.execDialog(stampDialog);

  this.getField(builder.radioGroup).value = stampDialog.radioSelection;
  //Popup1
  this.getField(builder.popupGroup).value = stampDialog.popupSelection;
  //Popup2
  this.getField(builder.popupGroup2).value = stampDialog.popupSelection2;

  for (var i = 0; i < builder.textBoxes.length; ++i) {
    var t = builder.textBoxes[i];
    this.getField(t.field).value = stampDialog.textBoxResults[i];
  }
}

function CreateDialog(dialogBuilder) {
  var sd = new Object();
  sd.builder = dialogBuilder;
  sd.radioSelection = "";
  //Popup1
  sd.popupSelection = "";
  //Popup2
  sd.popupSelection2 = "";
  sd.textBoxResults = new Array();

  var popupElements = new Array();
  var popupElements2 = new Array();

  //Popup1
  popupElements[0] = {
    type: "popup",
    item_id: "ppi1",
    field: sd.builder.popupGroup,
    width: 250
  };

  //Popup2
  popupElements2[0] = {
    type: "popup",
    item_id: "ppi2",
    field: sd.builder.popupGroup2,
    width: 250
  };

  var popupCluster = {
    type: "cluster",
    name: builder.popupGroup,
    elements: popupElements
  };

  var popupCluster2 = {
    type: "cluster",
    name: builder.popupGroup2,
    elements: popupElements2
  };

  var stateElements = new Array();

  for (var i = 0; i < dialogBuilder.radioButtons.length; ++i) {
    var c = dialogBuilder.radioButtons[i];
    stateElements[i] = {
      type: "radio",
      name: c.description,
      item_id: "rad" + i,
      group_id: "grp1"
    };
  }

  var stateCluster = {
    type: "cluster",
    name: "Status",
    alignment: "align_center",
    align_children: "align_distribute",
    elements: stateElements
  };

  var optionsElements = new Array();

  for (var i = 0; i < dialogBuilder.textBoxes.length; ++i) {
    var view = new Object();
    view.type = "view";
    view.align_children = "align_row";
    view.elements = new Array();

    var t = dialogBuilder.textBoxes[i];

    var s = new Object();
    s.type = "static_text";
    s.item_id = "sta" + i;
    s.name = t.description;
    s.width = 90;

    var e = new Object();
    e.type = "edit_text";
    e.item_id = "edt" + i;
    e.width = 150;

    view.elements[0] = s;
    view.elements[1] = e;

    optionsElements[i] = view;
  }

  var optionsCluster = {
    type: "cluster",
    name: "Options",
    elements: optionsElements
  };

  sd.initialize = function(dialog) {
    var init = new Object();

    for (var i = 0; i < this.builder.textBoxes.length; ++i) {
      var t = this.builder.textBoxes[i];
      var id = "edt" + i;
      init[id] = t.default();
    }

    dialog.load(init);
    dialog.load(this.builder.listItems[0]);
    dialog.load(this.builder.listItems2[0]);
  };

  sd.commit = function(dialog) {
    var res = dialog.store();

    for (var i = 0; i < this.builder.radioButtons.length; ++i) {
      var c = this.builder.radioButtons[i];
      var id = "rad" + i;
      if (res[id] == true) {
        this.radioSelection = c.value;
        break;
      }
    }

    for (var i = 0; i < this.builder.textBoxes.length; ++i) {
      var t = this.builder.textBoxes[i];
      var id = "edt" + i;
      this.textBoxResults[i] = res[id];
    }

    //Popup1
    for (var i in res["ppi1"])
      if (res["ppi1"][i] > 0) {
        this.popupSelection = i;
      }

    //Popup2
    for (var i in res["ppi2"])
      if (res["ppi2"][i] > 0) {
        this.popupSelection2 = i;
      }
  };

  sd.validate = function(dialog) {
    var res = dialog.store();
    for (var i = 0; i < this.builder.radioButtons.length; ++i) {
      var c = this.builder.radioButtons[i];
      var id = "rad" + i;
      if (res[id] == true) return true;
    }`enter code here`

    app.alert(this.builder.radioErrorMsg);
    return false;
  };

  sd.description = {
    name: "Stamp Dialog",
    elements: [
      {
        type: "view",
        align_children: "align_fill",
        elements: [popupCluster, popupCluster2, stateCluster, optionsCluster]
      },
      {
        type: "ok"
      }
    ]
  };

  return sd;
}

印章代码

var builder = {
  // These map to Text Fields in the Stamp
  textBoxes: [
    {
      field: "CheckedBy",
      description: "Checked by:",
      default: function() {
        return Collab.user;
      }
    },
    {
      field: "Date",
      description: "Date:",
      default: function() {
        var curDate = new Date();
        return (
          curDate.getMonth() +
          1 +
          "/" +
          curDate.getDate() +
          "/" +
          curDate.getFullYear()
        );
      }
    },
    {
      field: "Submittal",
      description: "Submittal #:",
      default: function() {
        return "";
      }
    },
    {
      field: "Spec",
      description: "Spec #:",
      default: function() {
        return "";
      }
    }
  ],
  // This maps to a Radio Group in the PDF named 'Status'
  radioGroup: "Status",
  radioButtons: [
    // value maps to the 'Choice' of each radio button in the group, description will show on the dialog
    { value: "Approved", description: "Approved" },
    { value: "Revise", description: "Revise" },
    { value: "Rejected", description: "Rejected" }
  ],
  radioErrorMsg: "Please select a status",
  // This maps to a Popup Group in the PDF named 'Project'
  popupGroup: "Project",
  listItems: [
    {
      ppi1: {
        //list of items of Popup menu, positive number indicates default selection
        "Project 1": -1,
        "Project 2": -1,
        "Project 3": -1,
        "Project 4": -1,
        "Project 5": -1
      }
    }
  ],
  popupGroup2: "Service",
  listItems2: [
    {
      ppi2: {
        //list of items of Popup menu, positive number indicates default selection
        "1": -1,
        "2": -1,
        "3": -1,
        "4": -1,
        "5": -1
      }
    }
  ]
};

完全意识到这可能为时已晚，但我修改了Bluebeam原始代码，因为它不完全是我所寻找的，未来的我/任何人与此问题我已经创建了一个模块化的方法：
https://github.com/Jacen-crudo/Bluebeam-Stamp-DiagBox
它还具有安装和修改说明。