dead@0It has to have no value:
deadYou can see an example of how I handle that special case here: https://wiki.roll20.net/API:Cookbook#objectToStatu...
selObj.set("status_dead");This is working just fine for all of the other markers. I do see a @0 at the end of the marker in the list after adding, but I do not know how it got there.
The set function expects a second parameter. Most likely, if that parameter isn't true or false, it gets parsed as an integer, with 0 used as a default just to avoid stuff like NaN... but that means if you don't supply the second argument at all, you're getting a value of 0 (which strictly speaking is a different result than passing true as the second parameter, even if they look the same for all markers except dead).