With the specify source file window open, click the Add File button, find and select the file you want inserted.
I cannot choose the file. The "open" button within the Insert File window is grayed out. I also tried several other folders and it seems that I cannot choose anything.
this is a just a folder on my hard drive.
Are you using Insert File in a script or from the Insert Menu?
If you want to use the insert File option from the File Menu, enter browse mode, click or tab into a field of type container first. If you are using the script step for this action, you have specify a field of type container.
this is a script to allow me to insert a pdf into a container field. I want filemaker to open up the folder on my hard drive so that I can choose the pdf to insert into the container.
I added a screen shot to the initial post
Unfortunately, you can't specify a folder in Insert File. You can leave this parameter blank ( Insert File ( Reference ; MedicalExpeses::ImageA ) ) so that the user can use the open file dialog to find and insert the desired file.
Or you can specify a specific file in the Specify File dialog and it will be inserted without bring up a dialog box where the user can select the file. (If you check all the example formats for referring to a file, all of them end in "filename".)
There are File manipulation plug ins you can web search for if you want to check for ways that might allow you to specify a folder location for your script.