Enter Ip address on2nd screen for mqtt broker

MIT App Inventor Help
1

I want to enter the IP address of MQTT broker on a 2nd screen and store the value in tiny DB until it change again ,my bloks does not work please assist
blocks-15

blocks-16
blocks-16737×974 138 KB

clock_ip.aia (314.3 KB)

2

That second block in Screen1.Initialize makes no sense.
It overwrites the first block's work.
Remove it.

Read the tool tips of the blocks