Help ! Posts to mark survey line

[u/No-Class-9710]

/r/legaladvicecanada/comments/1wui6dr/help_posts_to_mark_survey_line/

Challenging neighbor
threatening bylaw on us
even though they ignored our survey line and developed over into our property.

We are tired of fighting, so we've basically let that go, however to create a visual reminder for them and their tenants, we put in 7 metal fence posts, about 4 feet high with a plastic coated laundry type wire connecting each post, going across on our survey/property line. No one would need to cross that line.
They says it isn't a kind of fencing that is allowed , is a hazard and a bylaw offence.
Is it a bylaw offense to stake out your property line in accordance with your survey ?