Custom success message on FilePond file upload - filepond

Question

I’m using FilePond 4.30.4 with React and react-filepond 7.1.2. Everything is working great and I can upload files.
My server responds with a file ID, and this comes back down to FilePond. I can see it in the onprocessfile event.
I’d like to include this is the ‘Upload Complete’ message. e.g. ‘Complete, file 12345’. How can I set this?
I’ve tried to update .labelFileProcessingComplete in onprocessfile, but it has no effect. I can see my events being fired and the correct data in the console. Perhaps there is another way to update the 'Upload Complete' label with a custom message for the file.
<FilePond
ref={filePondRef}
oninit={() => handleInit()}
files={files}
onupdatefiles={setFiles}
onprocessfile={ (error, file) => {
if (error) {
console.log('OnProcessFile: we have an error:' + error);
console.dir(error);
return;
}
console.log('OnProcessFile:File processed', file);
console.log('OnProcessFile:set processed message to ', file.serverId);
//This has no effect
filePondRef.current.labelFileProcessingComplete='Completed:-#' + file.serverId;
}
}
labelIdle='Drag & Drop your files or <span class="filepond--label-action">Browse</span>'
server={ {
timeout: 7000,
process: {
url: apiUrl,
method: 'POST',
withCredentials: false,
timeout: 7000,
onload: (res) => {
console.log('onload:and label with res=' + res);
// this has no effect either
filePondRef.current.labelFileProcessingComplete='Completed:' + res;
return res;
}
}
}
}
labelFileProcessingError= {() => {
// replaces the error on the FilePond error label
console.log('labelFileProcessingError: serverResponse is:' + serverResponse );
return serverResponse;
}}
/>