Trouble with Starting Second Workflow

I have created a secondary workflow but it wont start.  At the end of the primary workflow, outside of the last step I have:

"then Start another workflow on Current Item, named Current Item:Secondary Workflow

then log Starting Secondary Workflow to the workflow history list"

Am I supposed to add something on the Secondary Workflow to tell it to start? If so what is it?  It is meant to do an endless loop of every five minutes. I took all the Start settings off of the Secondary Workflow because I only really need it to run once the primary workflow has told it to.  What might I be doing wrong?  Thanks!