How to get a placed block locations ?

[pete_parker]

on place of obsidian:
  if "%region at player%" contains "cpvp":
    set {blockplace} to obsidian
    set {pos} to location of placed block
    broadcast "%{pos}% lol"
    wait 10 seconds
    set event-block to air 

so im trying to get it where it would broadcast the cords of a fight in chat ? but idk how i would do so , any help would be great !

[ReportCards]

it's pretty simple, you'd use the "location of" expression, but using "event-block" and not "placed block", whenever an expression/effect asks for a block, and you want to access the block in the event, you'll want to use "event-block".