let Data_api = "/webhook/data"; let freight = null; let testing = true; let ReqData = { Places: "Stadte"} // Post to n8n Server to get Data from Grist in JSON format. async function GetMarkerData() { try { const res = await axios.post(Data_api, ReqData); RenderMarkers(res.data); } catch (err) { console.error (err); } } function RenderMarkers(data){ array.forEach(data => { var marker = L.marker([data.X, data.Y]).addTo(map); }); } GetMarkerData();