Updating a table with a filecolumn

I have an “image” column in one of my tables. I can use filecolumn to
insert data into the table just fine, the image gets uploaded. However,
when I try to update that table, the image field in the form doesn’t get
populated with the data in the image column.

here’s a part of my _form.rhtml that doesn’t get populated on edit:

Image
<%= file_column_field 'client', 'image' %>

What am I doing wrong?

Thanks,
eduard