how to give a generic value/id in HTTP request (path) in jmeter?

[The product id changes very time when the page refreshes so can you tell me how can one give a generic id/name which automatically picks the assigned id when the page is loaded.

Example Currently what is happening: In Path: /EAPPFileUpload/UploadFiles?currentFolder=ARA&productID=1234

What is required In Path /EAPPFileUpload/UploadFiles?currentFolder=ARA&productID=variable

where variable shall possess the id in it.]1