Keyboard switcher manual set string

[Kaspars]

  Hi from Latvia,

  I have one q. I use latvian characters with ['] not with [alt], how 
most of Latvians.
Normaly if i setup Latvian keyboard it write:
$setxkbmap lv
(what will be "setxkbmap lv -variant basic")
But I need:
$setxkbmap lv -variant apostrophe

where I can manualy change string what to execute?
I setup it, bet after I upgrade with yum it change back to old style.

thanks,

Casper