In the condition merge text and variable.

General
1

How can I write: If battery is bigger than 50%, then call back "battery is <X%>" else call back "battery isn't <X%>"

This not working for me:

$if( bi(level) > 50, "battery is bi(level)", "battery isn't bi(level)" )$

2

$if(bi(level) > 50, "battery is " bi(level), "battery isn't " bi(level))$

3

It also does not work for me :(