Space after automatic words are pressed

First off thank you for the perfect app. My first app purchase from the market.

Yes, I have done what the subject says, but I want it just for the English part and not the Japanese (since Japanese don't use spaces in their sentences).

How can this be controlled?

Cheers!

Oh indeed I planed to make this option ignored when using Japanese (and Chinese) but seems I forgot... Will do it for the next version!

Thank you!