Delegate User script for approval,assignment,all notification

[Divyesh Thakur]

I Created a Delegate catalog Item to request Delegations and I attached one Workflow. In this work flow I used run script to create delegate record automatically. But I want the functionality to check the approval, assignment, all notification according to the choice which the user selects from the catalog item. I have given the delegation type as multiple choice.
Run script code in Workflow:-

if(current.variables.delegation_type=='Approvals')
{
var del = new GlideRecord('sys_user_delegate');
g_form.setValue('approvals', true);
del.addQuery('user',current.variables.u_requested_for);
del.query();
if(!del.next())
{
del.initialize();
del.user = current.variables.u_requested_for;
del.delegate = current.variables.assigned_delegate;
del.starts = current.variables.start_date;
del.ends = current.variables.end_date;
del.approvals = current.variables.Approvals;

del.insert();
}
else
{
del.user = current.variables.u_requested_for;
del.delegate = current.variables.assigned_delegate;
del.starts = current.variables.start_date;
del.ends = current.variables.end_date;
del.approvals = current.variables.Approvals;
//del.assignments = current.variables.Assignments;
//del.notifications = current.variables.All_notifications;
del.update();
}
}
else if(current.variables.delegation_type=='Assignments')
{
g_form.setValue('assignments', true);
del.addQuery('user',current.variables.u_requested_for);
del.query();
if(!del.next())
{
del.initialize();
del.user = current.variables.u_requested_for;
del.delegate = current.variables.assigned_delegate;
del.starts = current.variables.start_date;
del.ends = current.variables.end_date;

del.assignments = current.variables.Assignments;
del.insert();
}
else
{
del.user = current.variables.u_requested_for;
del.delegate = current.variables.assigned_delegate;
del.starts = current.variables.start_date;
del.ends = current.variables.end_date;
del.assignments = current.variables.Assignments;
del.update();
}
}