i looked in other conversions and czech is listed as cze NOT csy.
3 language code >
czech > cze or ces
Code:
czeAutorunMessage1_1 = %1 - instalace
czeAutorunMessage2_1 = Spustit
czeAutorunMessage2_2 = Instalovat
czeAutorunMessage2_3 = Odinstalovat
czeAutorunMessage2_4 = Configuration
czeAutorunMessage2_5 = Zavřít