Validation after import tool for form fields

I am using import tool in post processing of the form . In the store data form i have add the field should have the value from the database data only . but on excel upload it is not checking this data . 

I have added the below bean shell  code for validation .

the record id in the bean shell is returning null .

but this is also not working 

import java.sql.*;
import java.util.*;
import org.joget.apps.form.model.*;
import org.joget.apps.form.service.*;
import org.joget.apps.app.service.AppUtil;
import org.joget.apps.form.dao.FormDataDao;
import javax.sql.DataSource; 
import org.joget.apps.app.service.AppUtil; 
import org.joget.commons.util.LogUtil; 

 
public boolean validate(Element element, FormData formData, String[] values) {
    boolean result = true;
    
    FormRowSet f = new FormRowSet();
    f.setMultiRow(true);
    
    FormDataDao formDatadao=(FormDataDao) AppUtil.getApplicationContext().getBean("formDataDao");
     
    if (values != null) {
    
        String recordId = "#requestParam.lo_number#";
   
        DataSource ds = (DataSource)AppUtil.getApplicationContext().getBean("setupDataSource");
        con = ds.getConnection();
       
        if(!con.isClosed()){
                    System.out.println("Connected.....");
           
                    String sql = "SELECT select c_type from app_fd_types where c_type =?";
                    PreparedStatement stmt = con.prepareStatement(sql);
                    stmt.setString(1, recordId);
                    ResultSet rs = stmt.executeQuery();
                    
                     int size = 0;
                     while (rs.next()) {
                            size++;
                         }
                   
                        if (size == 0){
                            System.out.println("Not valid  Type");
                            String id = FormUtil.getElementParameterName(element);
                            formData.addFormError(id, "Not valid  Type");
                            con.close();
                            return false;
                        }
                        
                    
   
        } //Connection 

            con.close();
            return result;
            }
}
 
//call validate method with injected variable
return validate(element, formData, values);