submit editor data to servlet

I'm stuck getting the editor to submit to servlet. When I click "save", servlet is invoked. However, I'm not seeing data being passed back.

$(document).ready(function() {
     editor = new $.fn.dataTable.Editor( {
        ajax: "/DB7/SaveScreenDataServlet?theSessionId=E831FAE181D44A7F851A150B284672C36710",
        template: '#customEditForm',        
        idSrc: 'id',  //column 0 contains the id field of the screen data table      
        formOptions: { main: { focus: null } },
        table: '#historyTable',    
        display: onPageDisplay( $('#form-container') ),
        fields: [       
    {label: 'Effective Date', name: 'Effective_Dte', id: 'Effective_Dte', type: 'datetime',  format: 'MM/DD/YYYY', opts:{yearRange:100}, attr:{type:'datetime',maxlength:10,placeholder:'  /  /    '}  }
    {label: 'Job_History_ID', name: 'Job_History_ID', id: 'Job_History_ID', type: 'hidden' }
     {label: 'Type', name: 'Job_Type_Code', id: 'Job_Type_Code', type: 'select', options:   
         {label: "CO : Company", value: "CO : Company"},
             {label: "DIV : Division", value: "DIV : Division"},
             {label: "LOC : Location", value: "LOC : Location"},
             {label: "CLASS : Employment Class", value: "CLASS : Employment Class"},
             {label: "EMPCAT : Employment Category", value: "EMPCAT : Employment Category"},
            {label: "JOBCAT : Job Category", value: "JOBCAT : Job Category"},
             {label: "PLAN : Plan Code", value: "PLAN : Plan Code"},
             {label: "UNION : Union Code", value: "UNION : Union Code"} 
        ]}                     
        {label: 'Emp_Employee_ID', name: 'Emp_Employee_ID', id: 'Emp_Employee_ID', type: 'hidden' }
     {label: 'Value', name: 'Job_Value_Code', id: 'Job_Value_Code', type: 'select', options:   
            {label: "A : ABC Company", value: "A : ABC Company"},
            {label: "B : BTF Company", value: "B : BTF Company"},
            {label: "C : CXW Company", value: "C : CXW Company"},
            {label: "D : DYZ Company", value: "D : DYZ Company"},
            {label: "E : ESB Company", value: "E : ESB Company"},
            {label: "F : F Company", value: "F : F Company"},
         ]}                    
         {label: 'revision_id', name: 'revision_id', id: 'revision_id', type: 'hidden' }
       ]} );

I tried changing this line

 ajax: "/DB7/SaveScreenDataServlet?theSessionId=E831FAE181D44A7F851A150B284672C36710",

ajax: ({
            url : "/DB7/SaveScreenDataServlet?theSessionId=E831FAE181D44A7F851A150B284672C36710",
            type: "post",
            data : form_data
        }),

and the screen no longer loads. What am I doing wrong? Thanks!