N8n hooked to Mattermost for a tekmetric webhook

I’ve been working on this for a few days sometimes I get it working then I take three steps backwards and I need some help i have a small automotive repair shop and woulf like Mattermost to automatically post when in tekmetric that status amhas changed or when a tech writes a note or finishes an inspection or when the press completed on a job for an alert to pop up the messages shouldn’t just be plain adding some sort of emoji or I catching so everyone knows what going on