Default Slide/Swype function on AOSP keyboard

hopefully this is the right Forum for the following question:
I am using CyanAOSP Android ROM (KitKat 4.4.2) and AOSP Keyboard with 3 languages installed: English, German and Croatian. For all of them I activated slide/swype function but it is working only for the English and German language typing/swyping.
Does anybody know how to get slide function to work on Croatian language?
When I type in croatian words, it works fine, only the slide function does not work.

I bought Swype but it slowed down my Smartphone (Samsung I9000) significantly, as well as SlideIT.

Thanks for any Suggestion/Help.