How to trigger DMA through PWM timer capture interrupts?

Hello, i'm trying to trigger dma request by timer via pwm timer mode. Actually i just find sequence of acts in datasheet "producing DMA trigger events". I'm using simplelink_cc13x0_sdk_1_50_00_08 library and doing next sequence to drive trigering dma via timer event and it don't work, what can i repair, help please:

PWM_init();
PWM_Params_init(&pwmParams);
pwmParams.dutyUnits = PWM_DUTY_FRACTION;
pwmParams.dutyValue = pwmDuty;
pwmParams.periodUnits = PWM_PERIOD_HZ;
pwmParams.periodValue = pwmFreq;

pwmHandle = PWM_open(Board_GPTIMER0A, &pwmParams);
    if (pwmHandle == NULL) {
        while (1);
    }

/* This setting DMAEV register, because any other way to set this register i haven't found */ 
HWREG(((PWMTimerCC26XX_Object*)pwmHandle->object)->hTimer->hwAttrs->baseAddr + GPT_LUT[((PWMTimerCC26XX_Object*)pwmHandle->object)->hTimer->timerPart].offset + GPT_O_DMAEV) |= GPT_DMAEV_CAEDMAEN;

GPTimerCC26XX_registerInterrupt(((PWMTimerCC26XX_Object*)pwmHandle->object)->hTimer, PWM_userFunc, GPT_INT_CAPTURE);

EventRegister(EVENT_O_UDMACH9SSEL, EVENT_O_GPT0ACAPTSEL);

dmaHandle = UDMACC26XX_open();
if(dmaHandle == NULL)   {
while(1);
}

uDMAChannelAttributeDisable(((UDMACC26XX_HWAttrs*)dmaHandle->hwAttrs)->baseAddr, UDMA_CHAN_TIMER0_A, UDMA_ATTR_USEBURST | UDMA_ATTR_ALTSELECT | UDMA_ATTR_REQMASK | UDMA_ATTR_HIGH_PRIORITY);

uDMAChannelControlSet(((UDMACC26XX_HWAttrs*)dmaHandle->hwAttrs)->baseAddr, UDMA_PRI_SELECT, UDMA_SIZE_32 | UDMA_SRC_INC_32 | UDMA_DST_INC_NONE | UDMA_ARB_1);

/* Actually source is buffer and destination is unincremented TAMARCH register */
uDMAChannelTransferSet(((UDMACC26XX_HWAttrs*)dmaHandle->hwAttrs)->baseAddr,
                               UDMA_PRI_SELECT, UDMA_MODE_BASIC,
                               cnvData, (void *)(((PWMTimerCC26XX_Object*)pwmHandle->object)->hTimer->hwAttrs->baseAddr + GPT_LUT[((PWMTimerCC26XX_Object*)pwmHandle->object)->hTimer->timerPart].offset + GPT_O_TAMATCHR),
                               1
                );

uDMAChannelEnable(((UDMACC26XX_HWAttrs*)dmaHandle->hwAttrs)->baseAddr, UDMA_CHAN_TIMER0_A);

PWM_start(pwmHandle);

while(1);

However, if i configure dma via UDMA_CHAN_SW_EVT0 channel event and using uDMAChannelRequest(); for software request it perfectly works.