Make Handsontable droppable

Hi Friends,

I have Table like this.

var oExcelGrid = new ExcelGrid("oExcelGrid", {

   data : "{/data}",

   options : {

    minSpareRows : 100,

    colHeaders : true,

    rowHeaders : true,

    contextMenu : true

});

Now I try to make it droppable with:

   $("#oExcelGrid").droppable({

             drop: function(event, ui) {               

             }});

But it tells me all the time.

undefined is not a function.

Can somebody help me to make it dropable?

Thanks in advance.

Rg. Joerg