Your code appears to be correct in its current format. You will find the SAS file WORK.NEWFILE contains your unloaded formats.
The SAS documentation on PROC FORMAT has detailed information about the CNTLOUT= file contents - documentation starts here (with focus on CNTLOUT= parameter and the Output Control Data Set discussion):
Post a reply and PASTE the SAS log with the code and the associated error message(s). Also, provide info about your SAS version, OS where SAS is running, and whether SAS is running local on your machine or on a remote server.