Question [Q] National data roaming in CyanogenMod 11 doesn't work.

Hi. Yesterday I installed latest nightly version of CyanogenMod 11. Before this, I was using [LINARO/SABERMOD] unofficial CyanogenMod 11 but I had problem with data roaming. I thought that in official build this isue had been solved. Unfortunetely, my data transfer still doesn't work. In the place where I live, there is very weak signal and I have to change my operator to another one manually. The problem is, data transfer works only with my parent network. I enabled data roaming in options menu and I edited build.prop file, where I set dataroaming=true; (although data roaming was enabled, in this file value was set as false). Tell me please, what to do. I don't want to restore stock rom.