Catalog script validate attachment Error

[Khaled RAJHI]

Hi community,

Could you please help me to fix the Solution for the below script (Catalog script validate attachment)

Error MessageonSubmit script error: TypeError: gel is not a function:
function () { [native code] }

function onSubmit() {

   //Type appropriate comment here, and begin script below

   var catalogsysid = gel('sysparam_item_guid').value;

   var ga = new GlideAjax('CheckAttachment');

   ga.addParam('sysparm_name','attachmentCount');

   ga.addParam('sysparm_catalogsysid',catalogsysid);

   ga.getXMLWait();

   var attCount= ga.getAnswer();

   if (attCount<1)

   {

   alert('Please Attach your Passed Certification');

   return false;

   }

else

{

return true;

}

}

[Jagadish Sanadi]

Hello @Khaled RAJHI 

Try replacing gel('sysparm_item_guid').value with g_form.getUniqueValue()

[Khaled RAJHI]

Hello @Jagadish Sanadi ,

Thank you it's working now, but the alert message is always displayed even when file is attached to the request, I mean when attachment is present, the alerte is displayed and the request is submitted, I want that alert disply only when there's no attachment 

Catalog script

function onSubmit() {

   //Type appropriate comment here, and begin script below

   var catalogsysid = g_form.getUniqueValue('sysparam_item_guid');

   var ga = new GlideAjax('CheckAttachment');

   ga.addParam('sysparm_name','attachmentCount');

   ga.addParam('sysparm_catalogsysid',catalogsysid);

   ga.getXMLWait();

   var attCount= ga.getAnswer();

   if (attCount<1)

   {

   alert('Please Attach your Passed Certification');

   return false;

   }

else

{

return true;

}

}

script include

var CheckAttachment = Class.create();

CheckAttachment.prototype = Object.extendsObject(AbstractAjaxProcessor, {

attachmentCount : function()

{

var catalogId = this.getParameter('sysparm_catalogsysid');

var gr = new GlideRecord('sys_attachment');

gr.addQuery('table_name','sc_cart_item');

gr.addQuery('table_sys_id',catalogId);

gr.query();

var attCount = gr.getRowCount();

return attCount;

},

  type: 'CheckAttachment'

});