Something

   /if ( ${queue_target_ID[${queue_target_index}]} ) {
      /if ( !${Spawn[ID ${queue_target_ID[${queue_target_index}]}].ID} ) {
         /bc Target_Index: ${queue_target_Name[${queue_target_index}]}(${queue_target_ID[${queue_target_index}]}) Vanished
         /call Target_Sub ${queue_target_ID[${queue_target_index}]}
      } else /if ( ${Spawn[ID ${queue_target_ID[${queue_target_index}]}].Distance} > 300 ) {
         /bc Target_Index: ${queue_target_Name[${queue_target_index}]}(${queue_target_ID[${queue_target_index}]}) Out of Range
         /call Target_Sub ${queue_target_ID[${queue_target_index}]}
      } else /if ( ${queue_target_Type[${queue_target_index}].NotEqual[${Spawn[ID ${queue_target_ID[${queue_target_index}]}].Type}]} ) {
         /if ( ${Spawn[${queue_target_ID[${queue_target_index}]}].Type.Equal[Corpse]} ) {
            /bc Target_Index: ${queue_target_Name[${queue_target_index}]}(${queue_target_ID[${queue_target_index}]}) Died
            /varset queue_target_Type[${queue_target_index} Corpse
         } else {
            /bc Target_Index: ${queue_target_Name[${queue_target_index}]}(${queue_target_ID[${queue_target_index}]}) WTF? ${queue_target_Type[${queue_target_index}]} to ${Spawn[ID ${queue_target_ID[${queue_target_index}]}].Type}
            /call Target_Sub ${queue_target_ID[${queue_target_index}]}
         }
      }
   }