Naming and default value for the C5 file manager

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So i have this code for a field where I want the user to input a URL to an image...

<input class="small" type="text" name="images[]"   value="<?php  echo $images[$i] ?>" >

However, I want to be able to allow them to use the file manager to chose the image instead of just inputting a URL.

I have the following code for the file manager which works fine:
cho $al->file('ccm-b-file', 'fID', t('Choose File:'), $bf); ?>
<?php $bf = File::getByID($fID); ?>


But as seen in my first line of code I need to be able to give that image picker a name and a default value. Is there any way to do this?

Thanks :)