need help to query another players client

edited January 3 in Any Topic & Chat
Hi guys. My multiplayer RPG has spells thrown around in realtime but nobody can throw a spell at the same time for animations. So before anyone throws a spell i want to ask the opponents client if it launched a spell first and i want the opponent to return the boolean before the spell is allowed to launch. How can i ask the other player to return his boolean to me? i cant just check his synchronized objects because due to latency it will not be correct.