ind3: load picture without preview delay

hello scripter,
I have a script which loads user-selected pictures:

set bilddateiwahl to choose file with prompt “Wähle die Bild-(Feature-)datei”
place bilddateiwahl on rectangle “Feature” of last page

If the picture files are bigger it takes some time until the open-button can be pressed, I guess because of checking for preview data.

Is there a way to get rid of this pause (“… without preview” or something like this)?

thanks