[otrs] remove html code in answer

Hi experts, I (want to) use the tag in a response template / answer. (Admin--> responses) But when the previous email (BODY) has HTML-code (most emails these days do) it shows a lot html code in the edit field like (</br>) instead of interpreting this. Is it possible to remove html from this field? something like RemoveHtml() Thanks Met vriendelijke groet / Gruß / Best Regards, Jurjen Verhoeff