how to check empty column?

i want to check {column_2[1]} and i following this tutorial http://www.wpallimport.com/documentation/advanced/if-statements/

spesific this script.

[IF({description[not(text())]})]
there are no {description} element(s) with text
[ELSE]
there are {description} element(s) with text
[ENDIF]

in my mind to use it like this

[IF({description[not({column_2[1]})]})]
there are no {description} element(s) with text
[ELSE]
there are {description} element(s) with text
[ENDIF]

n not working,
i really confiuse how to use it to check spesific column?

thanks

https://ww.wp.xz.cn/plugins/wp-all-import/