want to populate description field only when selected CI's class is Application service

[Avee90]

Hello All,

   I want to populate description field only when the selected configuration item's class is 'Application service' in configuration item field using script include and client script. I tried but no luck because of every class in configuration item is referring to a table. I glided the cmdb_ci as grCI table and used if(grCI.sys_class_name== cmdb_ci_service_auto) but it is not fetching the the CI's which are under Application Service class.
I copied the query from cmdb_ci table as class is Application service and got this query as sys_class_name=cmdb_ci_service_auto and I used this in script but not working. Can anyone help me on the script include

Script inlude:

               configurationItem: function(){

                              var applicationService= this.getParameter('sysparm_ci');

                              var grCI= new GlideRecord('cmdb_ci');
                              grCI.query();

                              while(grCI.next()){

                              if(grCI.sys_class_name== cmdb_ci_service_auto'){

                                             return true;

                              }  else {

                        return false;

                       }                          

               },

Even the selected CI's class is 'Application Service' then also not working not going into if loop.
Client script is working fine
Thanks in advance

[Mark Manders]

Please provide your client script and script include so we can see where it's going wrong. 

[Avee90]

Yes, Adding the script in my post

[Pratiksha]

Are you trying to do this on incident form? Use case : when you populate ci which is application service then you want to auto populate description. 

Question : Is it any fix value you want to populate or something from the application service? 

[Avee90]

I want to populate description field on Change form when the selected CI's class only Application Service. I'm adding the script in my post.