Help with Tactics-Action Hybrid Tutorial

%searchMasks = $TypeMasks::TerrainObjectType;  
  
        // search!  
        %scanTarg = ContainerRayCast( %start, %end, %searchMasks );  
     
        // If the terrain object was found in the scan  
        if( %scanTarg )  
        {  
            // Get the X,Y,Z position of where we clicked  
            %pos = getWords(%scanTarg, 1, 3);  
        
            // Get the normal of the location we clicked on  
            %norm = getWords(%scanTarg, 4, 6);  
              
            //if we are not moving already, start to deplete energy/action points  
            if(%ai.getVelocity() $="0 0 0")  
                %ai.schedule(500, "decEnergy");  
  
            // Set the destination for the AI player  
            %ai.setMoveDestination( %pos );  
              
            //clear his aim so he looks where he is running  
            %ai.clearAim();  
          
            // If the AI player already has a decal (0 or greater)  
            // tell the decal manager to delete the instance of the gg_decal  
            if( %ai.decal > -1 )  
            {  
                decalManagerRemoveDecal( %ai.decal );  
          
                if(%ai.getVelocity() !$="0 0 0")  
                {  
                    %ai.stop();  
                    return;  
                }  
            }

%searchMasks = $TypeMasks::TerrainObjectType | $TypeMasks::StaticObjectType;