Force product field output in a certaing language

Hi,

Before that code, you have some code which loads the data of the product and mainly one SQL query on the hikashop_product table.
That query is probably processed automatically by Falang/JoomFish to translate the data of the product in the current language.
And in that case, it's possible to deactivate the processing of Falang/JoomFish by adding a few parameters in the function running the SQL query, but in that case no information of the product will be translated and so you would need to run two queries, one with the translation process activated and another with it turned off, and merge the data between them appropriately.
Otherwise, in some cases (like in the backend where Falang/JoomFish doesn't process the queries), there is additional code to do a query on the table jf_content or falang_content to load the translations manually and replace the data in the product object.
In that case, it's possible to alter a bit the query to not load the translations for the custom field.

In both cases, I can't answer precisely as I don't know the code that you have before that line of code of your message and I don't know the context of where you're trying to do that.