Removing Comma Separator from Integer Field in Freedom UI

I am currently customizing the Account module in the Freedom UI and encountering an issue with the PDS_UsrBillToNumber_volqoyn field. This field is an integer field bound to PDS.UsrBillToNumber in the model configuration.

My goal is to remove the comma separator from this field, but the solutions I have tried so far have not worked. These include:

1. Using useThousandSeparators: false in controlConfig.
2. Setting useGrouping: false in the numberFormat object within controlConfig.
3. Modifying configurations in the format object for field values.
4. Implementing custom methods for formatting.

Unfortunately, none of these approaches have yielded the desired result. Could you kindly guide me on the correct implementation or suggest an alternative solution?