Hi @cameron.orourke
I think the formula in a generated column needs to act on the generated data. I don't believe it could be used to actually bring the data from a fieldset. You should be able to use a data format formula within your formula to get the correct date format. For example:from_dataset("Campaigns","start_date", campaign_id: campaign_id).strftime("%Y/%m/%d")
I've added a quick example using a generated date field in here:
https://www.mockaroo.com/6e9e6890
I can't test in yours as I don't have access to the dataset, but the general principle is the same.