I can't set teleport well on the sign.

[JPlayer3]

https://pastebin.com/ZABK7zBM

The problem is as the title says.

Is it possible to specify ~ 1 etc. in the coordinate specification?

"~ 1,~-1,~1"

[Sataniel98]

I'll leave this open since the error handling is erroneous, but no, that doesn't work. You can leave them empty though and the sign's location will be used.

[JPlayer3]

I understood it and solved the problem so I closed it.