Switch UIBB Between Edit and Read Only on Runtime

Hello Experts.

I have a Initial Screen and OVP Main page with some UIBB of different kind.

I want to ( after check some conditions ) set a UIBB to Display Mode in the event Leave Initial Screen.

I got the applicaction IF_FPM and IF_FPM_OVP references but i don't see a method to change a UIBB to Display Mode

There is a way to do that?

Thanks!