set $px '$n.posx' | set $py '$n.posy' | set $pz '$n.posz'

First of all what are you trying to do with your mcs? What’s the plan

You still need to figure out stairs and ladders. I suggest a stored position with exiva to give position feed back when follow is broken. I made a event script for elf bot that used dash follow and a note pad but as I don't support mc pvp trolls that's about all I will say so you can hunt for it and it might help.

look, I didnt really understand what you want to do
but if what you want is a massive follow up to a point without the MCS are messed up or can not fulfill the action of 'move to such $pos because it is already occupied' I recommend you to make several types of follow up rows, for example.

i.e.: f1: row of 1 MC by 1 MC, the row of 1sqm
f2: row of 2 MC by 2 MC, row of 2sqm
f3: row of 3SQM by MC
f4: row of 4SQM per MC
...

obviously with this there will be a MC Sublider that will go to the point where you want all the MCs to go and depending on the cave/place/site, you will swap the rows of these MCs

for normal tracking {follow}, in this case, if you want something simple just set up each custom MC to follow a certain MC on a certain $line.






now its time for the follow commands:
Commands received by MCS





before this you should already set who will be the MClider that follows the $pos sent by the leader
command SPECIFIC FOR MCLINE LEADER, follow $pos sent by leader: