Is not posible to use: "<",">" in stm32f0, keil v4?

I´m using this:

1. void definir_polaridades (void){
2.  
3. if (contar_valor_1_hsync<contar_valor_2_hsync){//DEFINIR POLARIDAD DE HSYNC
4. polaridad_hsync=5;
5. } else {polaridad_hsync=10;}
6.  
7. if (contar_valor_1_vsync<contar_valor_2_vsync){//DEFINIR POLARIDAD DE VSYNC
8. polaridad_vsync=5;
9. } else {polaridad_vsync=10;}
10. }

Keil don´t give any error, and compiles, but, when i check the result, it don´t take the operation.

Will I have to do without the operation?

Thx in advance!!!