Have you tired with somthing like this?
10 = IMG_RESOURCE
10.file.import = uploads/tx_templavoila/
10.file.import.current = 1
10.file.import.listNum = 0
10.stdWrap.required = 1
10.stdWrap.wrap (
<img src="|" />
)
That's asolution i found by googling a bit - but I have not tried it myself. In theory it should work?