Simple animation ?

I am working on a project in Captivate that uses a good many pre-created .swf files.  I don't know what program was initially used to create them, but some need updated.  Here is one of them:

I am able to change the text, and move / edit other items.  However, the two valves that are circled  need to blink red.  They blink in the originally published .swf file, but I can't figure out how to get them to blink after I edit other information.