Does anyone know what the name of the plug-in that can run the process from expr

It was called Run Process Expression but it has been removed from Forum since per Appian Best Practice guidelines: "Functions should execute without side effects because there are circumstances in which expressions are reevaluated." forum.appian.com/.../Custom_Function_Plug-ins Executing a process is very much a side effect and also can be system intensive. This is particularly important with the advent of SAIL as expression re-evaluation can now happen extremely frequently in dashboards and forms. As such, this plugin is being denied and will be removed from Forum

Does it mean that any usage to this plug-in will not be supported?

Can you clarify what you mean by supported? Since plug-ins shared in Forum are not part of the base product the assistance you receive when it comes to their use is actually from the Appian Forum Community via Tempo where the author or any other person who is familiar with the component provides assistance.

I see. Thanks for this information.