Caprure compare Interrupt

I try to generete interrupt when CNT register reach any value. But It generete when I enabled to interrupt EGR bit is always zero. when I try to change accept first bit not effected.

It is configuration

 capture = TIM_GetCapture2(ExternalOSCTimer);

 TIM_SetCompare2(ExternalOSCTimer, capture + .DelayOverFlow);

TIM_ITConfig(ExternalOSCTimer, TIM_IT_CC2, ENABLE);