How to load long review comments using Performance Document HDL

Summary:

We are loading Quarterly Review Feedbacks using Performance Documents HDL as new requirement.

There is a "Comment" attribute from Ratings And Comments metadata under PerfDocComplete.dat. But currently, it only holds up to 255 characters. Is there a way to load comments longer than 255 characters - like using a clobfiles etc?

If done in the UI, the field can contain more than 255 characters.

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