Finally some problems are fixed ... Thank you , Guys!
Now I can use gcin with skype only if I put "export GTK_IM_MODULE=gcin " and "export XMODIFIERS='@im=gcin' "
in my .profile.
Should I modify the script in 80im-switch ?
# X Input method setup script
# Keep original values related to IM
Is posible to modify this settings?
please see 80im-smitch file