I try to bind this [System]Client/System/DefaultTagProvider on a report parameter, but its giving me bad value or null value, saying the tag is not available, but when I tried it on the script console its working, maybe reporting module cannot read the tag>?
It's somewhat of an unfortunate accident of history, but as the naming structure implies, [System]Client/ tags are only available in a Vision Client context. So in the Designer (while the Vision module is installed) or in a standalone Vision client. They will not work in Perspective, Reporting, or anywhere else scripts are actually being run on the gateway.