Integrity Client URL for runchart is not implemented by PTC, i.e. integrity://... ?

Hi

We are using Integrity Client 10.8.0.8356

I can successfully execute the "im.exe --gui runchart chartname" CLI command

I can also successfully execute the web interface URL for runchart, i.e. http://server:port/im/runchart?selection=chartname

However when I try to execute integrity://server:port/im/runchart?selection=chartname,

I get an error message box saying MKS154477: Command "runchart" is not supported for use in Integrity URL links.

wonder if I am  using the right syntax or not. Can anyone provide more details ? Thanks.