Knowing how you are set up would help us here, Vance.
Will one User be able to display many pictures?
What happens when the time runs out; should the picture be deleted from the system?
What FM version and OS are you using?
Is the picture in the same table; describe the table(s) involved please.
Im useing Fmp10 Windows 7 and I have a runtime .. I allow users to upload a Jpeg to my server I created a Html file on my website which inserts the file<jpeg> and inserts it to an html file in which file maker looks at it and displays the Html file with web viewer But I want to create a way so that my users can put a time limit on how long the web viewer will display it .. Like 30 days or 15 days .. after the time is up I dont want to delete the file because they may want to display the picture longer and be able to go back and reset the time limit ..