Post transformation rule set request ship date plus 7 days

Summary:

hi Gurus,

I was able to set post transformation rule to populate request ship date to schedule ship date following doc ID 2190769.1, how ever If I need to 7 days in the rule , I am struggling to update the below assert new statement to add 7 days. Its possible in pre-transformation rule I tried to copy the assert new code from pre-transformation rules its not working, has any one achieved adding 7 days in post transformation rules

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