Note: This documentation applies to the Nuvexlens Advanced Charting System. Nuvexlens fully supports technical indicators and strategy backtesting to help you make smarter trading decisions.
I cannot send webhooks to Slack
Slack only accepts JSON data, as written in their documentation, so you need to format the alert message properly. You can find the example of formatting in the documentation. Instead of a usual alert message 'BTCUSD Greater Than 9000' you should use a key "text" with a value containing the alert message:
{"text":"BTCUSD Greater Than 9000"}
You can find out more about the JSON format in Wikipedia.