Hello,
In HikaMarket "Access > Vendor options" you have some available limitations like the maximum number of prices, categories, options, related, images... But there is setting for the files !
So it will be something I will add in a future release (it should be the next one).
But please note that the limitation do not remove the previous data ; it just refuse the addition of extra elements.
If you do want to delete the old one and put a new one ; best would be to use a trigger like
onHikaBeforeFileSave(&$file, &$do)
But that trigger is currently not called with drag'n'drop upload, just with the popup.
It could be something that we could improve (but we will need more feedback on it)
Now if you just want to have an uploader with one single entry ; you can override the view and replace the call of
By
Regards,