Javascript Temporary Permissions

Good day all.  I'm still using v11 SP10.  How do I grant temporary permission for a user through Javascript?  I want to add a Comments tab to our custom change ItemType.  I have a script attached to an Action to open a dialog box so a user can add a comment.  The Submit button runs another script to pull the comments field information and sends it back to the original script.  The original script then creates a Comments relationship entry for the change.  I have this working except when the change is in the In Review Life Cycle state for normal user, it works for admins.  I want to temporarily grant Aras PLM identity to the user so it can be added.  I don't want to allow users to be able to edit anything else in the change while it is In Review.  

Method:  DEMO_Notes_Form

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DEMO_SUBMIT-Notes

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