multiple times for timepoint object?

I'm trying to do something very straightforward: take a potentially long list of time points (in ms) that is stored in a coll object, and, with a minimum of patching, get a bang at each of the time points following an initial trigger (e.g. activating the transport). I can only seem to specify one time point using the timepoint object. I tried creating a little loop that feeds a new argument back to the timepoint every time it bangs (see below). This works if the time points are sufficiently far apart, but it was not generally reliable.

Any hints? Many thanks!!
Tim