Script to automatically create and link parent records

I have created a script that looks for records in a table where the reference field to the linked table = null, then creates a suitable parent record and links the two together:

for i in select 'Submission Clips 2' where refSubPkgs = null do
let pkgName := i.'Submission #';
if cnt(select 'Submission Packages2' where 'Submission #' = pkgName) = 0 then
let newRecord := (create 'Submission Packages2');
newRecord.('Submission #' := i.'Submission #')
end;
i.(refSubPkgs := first(select 'Submission Packages2' where 'Submission #' = pkgName))
end