Hmm. I groping in the dark a bit. Is the field defined as Number (18,1) on the Object? If so, is it a field whose definition you can change? (I work strictly with custom objects and fields, so if you are using standard Salesforce objects I may have a different perspective.)
Depending on the nature of the field, if you can’t change its definition, you may be able to create a Formula field on the SF side, or look into UI-Only fields on the Skuid side.