It should be the other_field, I checked with ->addSoftRule('password', :...

...:IS, 'strlenMin', 6);

@pmjones, I also feel like as we added the translation message does that limit users to use the default translator. 

May be we need an option to show the labels itself than the message taken from the intl .

So say if the filter has a flag it will show the string, else label. Let by default it be string message.

Thoughts ?