User script (__.cmd) for self update values

[jvondrus]

Hello, I'm looking for some user script (cmd file) for self updating values at fields without mqtt or HA.
Like cmd file which is executed every X second and make color update of WiFi symbol according to signal strength.

Example:
"shedule_5.cmd"
IF status.rssi >= -70 THEN p0b11.text_color = "green"

Is something like that possible? Thank you.