Can't include a different name spelling

I have tried to correct a listing for Episode 9 of Wonderfalls https://www.imdb.com/title/tt0750410/reference/?ref_=ra_gb_ln%3Fref_%3Dra_dc_ln Where the actor playing Thomas had his name misspelled as Gaberiel Hogan instead of Gabriel Hogan. It currently is credited with the attribute (as a different name). I tried to change it with a uploaded screenshot urn:alx:doc:937a93d2-a8ca-450d-ba84-56832d6ccf2d:08eecc20-c572-45d5-a16c-46606bf30397 but the system would allow it stating;- The as attribute "as Gaberiel Hogan" is not eligible for submission. Is there anyway to get around the problem or can admin make the change? Thanks