¿How to configure a editor button for product bbcodes?

[forosmb]

I live in a bilingual region wich shares spanish and catalan as languages.

Spanish is set as default forum language, but many users can contextually change from spanish to catalan depending on wich thread/forums are visiting.

Many users would profit of a post editor button that would just insert catalan product bbcodes in desired messages.

[lang=ca] .... [/lang]

I have tried to agregate this button by hand but text is only inserted in message (bbcodes) and not executed as product command.

Is there a simple solution for this?