Cant user F10 in KBD FMC Mode

hello,when i try to push the F10 key for the fmc in lbd mode my FS goes to a pause mode. Did anyone know a solution fot the problem?a request to the programmers:is it possible from your side to programm a shortcut for the F10 key, as for the KBD enable mode, after you have released the PMDG 747, that would be great. You managed to program many shortcuts for the fmc menu keys, so please do it fot the rest of it also :-) The most needed are: Enable/disable kbd mode (like with scollkey), F10 key and the special caracter +/-.That would be great and will push the 737 to the next higher level ;-) in my FS cockpit.can you please respond if you are able to program this, please.many thanks,Mark