There's a glitch with the checkpoint bricks, it recreates the events every time its loaded even if the events were already created. This is my way of applying events on plant:
package TreasureChest
{
function servercmdPlantbrick(%client)
{
parent::servercmdPlantBrick(%client);
%obj = %client.brickGroup.getObject(%client.brickGroup.getCount()-1);
if(%obj.getDatablock().getName() $= "brickTreasure_ChestData")
{
%enabled = 1;
%delay = 0;
%inputEvent = "onActivate";
%target = "Self";
%outputEvent = "openChest";
%obj.addEvent(%enabled, %delay, %inputEvent, %target, %outputEvent);
%enabled = 1;
%delay = 0;
%inputEvent = "onChestOpened";
%target = "Client";
%outputEvent = "bottomPrint";
%par1 = "You already opened this chest.";
%obj.addEvent(%enabled, %delay, %inputEvent, %target, %outputEvent,%par1,3);
}
}
};