I'm trying to use the filemaker script step called "send apple event" to open a varity of documents using another application. The application is called GCK and I would like to specify which GCK document is opened according to the value of a field in my FileMaker database called "FileID".

With ScriptMaker's "send apple event" command I have specified the target application as "GCK", and sent the "open document" event with "Field value..." and I specified the field in my database called FileID.

The GCK application launches but does not open the files I indicate. Does anyone know how to accomplish this kind of task?

Well, I've never really liked the send apple event step (except for to open applescripts saved as applications, which works charmingly), but another way to do it might be this:

Make a calculation field that is an applescript whose purpose is to open the file. Then just insert in the calculation the field that contains your filepath. Make sense?

Try sending the open document event to the finder instead of GCK. That often works better.