How do I allow a user to remove an uploaded asset from a front-end entry form? I see for users, I can add a hidden field &lt;input type="hidden" name="deleteUserPhoto" value="1" /&gt; to remove the uploaded photo, however I need to allow this functionality for an assets field in an entry form.

I have tried submitting an empty file field, but it just retains the existing uploaded asset after submission. 

Is there a trigger similar to deleteUserPhoto that I can use here?
File fields are used for uploading new images. To delete all the Assets for a field, submit a hidden field with no values.

&lt;input type="hidden" name="fields[assetsField]" value="" /&gt;


If, on the other hand, you want to retain some of them, then make that hidden field an array with the values you'd like to keep. Like this

&lt;input type="hidden" name="fields[assetsField][]" value="someAssetId" /&gt;
&lt;input type="hidden" name="fields[assetsField][]" value="someOtherAssetId" /&gt;


someAssetId and someOtherAssetId being the Asset IDs you'd like to keep for that field.