search in acf label

Hi,
I have an ACF (advanced custom fields) plugin on my website.
In the choices field, there is an option to specify both a value and a label. (I’ve attached a screenshot from ACF options.)

I’ve created some choices in this way:
englishName: persianName
Example:
red: قرمز

I’ve configured the Ajax Search Pro plugin in the way explained in this documentation:
https://documentation.ajaxsearchpro.com/general-settings/search-in-custom-fields

Now it just searches in value and doesn’t search in label.
For example, I can search “red”, but I can’t search “قرمز”.
How can I make Ajax search pro to search in labels?

Thanks