Finding sequenceID based on projectItem

Hi everyone,

I'm trying to write a script that will open the selected Project panel sequence, but I'm having trouble locating the necessary sequence ID to use project.openSequence(sequenceID). I'm using this script from PPP to return the projectItem of the selected object(s):

var viewIDs = app.getProjectViewIDs();

var selectedItems = app.getProjectViewSelection(viewIDs[a]);

Unfortunately, sequenceID is property of sequence, not projectItem. Is it somehow possible to find the sequence ID using the project item?

Thanks!