I started writing a CRON event based rule to handle my dynamic DNS change at home. Basically, few simple steps
- Get current external IP
- Check previous IP value to see if changes occured
- If any, call API with sendHttpPostRequest to update new IP on DDNS provider.
I’m stuck on step 2 : how can I store variable value on rule execution N and retrieve it on execution N+1 to compare both? I saw things to store Item values, but I wonder if I can do the same with variables.
Thanks for your replies !