Redirecting After Hidden ""RID"" Input Changes on New Records

So the task I have been trying to accomplish entails that after a new record is added, we need to use _API_CloneMasterDetail _to copy a template record's report link. The main issue I ran into with this was obtaining the new record's _Record ID#_ before the form redirected to my _RedirectURL_.

I found though that there is a _<input type="hidden" name="rid" value"" /> _where the value is a long integer (no idea what it represents), when adding a new record and is the _Record ID#_ when messing with an existing record. For new records, the hidden input changes _right_ before the redirect takes place. So, I wired up an event handler to track when the hidden input changes to the new _Record ID#_ and then I _window.location.replace() _to my code page with the new _Record ID# _as a URL Parameter.

While this allows me to run the _API_CopyMasterDetail_ request as desired, and the new record is created with the new copied report link, I wanted to check if anyone knew if redirecting this way at this stage after the hidden input changes would break/not run an important Quick Base task? Or, is redirecting manually at this stage pretty much the same as letting the _RedirectURL_ do its thing?

The reason I can't use _RedirectURL _at this point, is updating the _RedirectURL_ _after_ the hidden input is updated doesn't seem to get respected when Quick Base decides to redirect - it uses the old value before the hidden input was updated.