Adding files to collection problem

Help & Support
1

Hello,

I like to add files to a file collection.
The button should do the following thing: select all files which contain in the filename "_001", than create a collection folder with the name e.g. _001, all selected files then should be added.
The button works fine, it even creates a folder inside the file collection, but it does not ADD any files into the folder I have created.

Here is the code:

Set FLATVIEW=On,MixedNoFolders
@set index={dlgstringS|Type in index}
Clipboard SET {$index}
CreateFolder NAME="coll://{$index}" 
SELECT REGEXP "{$index}" HIDEUNSEL

Now the last line I took out: the one to tell the button to add the files to the collection.

I have tried 2 ways of adding the files to the files collection: none worked out.

a) Copy TO "coll://{$index}"
b) Copy TO "coll://{clip}"

Can anyone give me please a hit on what I do wrong?!
Thanks in advance !